Indole Building Blocks

Safety of Benzyl Alcohol. I found the field of Food Science & Technology very interesting. Saw the article Chemical characterization of four Brazilian brown propolis: An insight in tracking of its geographical location of production and quality control published in 2019.0, Reprint Addresses Narain, N (corresponding author), Univ Fed Sergipe, Lab Flavor & Chromatog Anal, Sao Cristovao, Sergipe, Brazil.. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol.

The aim of this work was to undertake a detailed analysis on chemical constituents of brown propolis, originating from four different states (Bahia, Minas Gerais, Parana and Sergipe) of Brazil. The volatile profile was determined by using HS-SPME-GC-MS along with the determination of total phenolic compounds content, flavonoids and antioxidant activity. A total of 315 volatile compounds were identified, however, several of them have not been reported so far in the Brazilian brown propolis. The terpenes represented the major class with 40.92-84.66% of the total area in the chromatograms. PCA analysis of the majority of compounds successfully indicated the volatile profile of each propolis sample according to their geographical origin. The analysis of volatile compounds and its characterization also varied significantly and confirmed that these depended on the geographical area of collection of propolis. The data generated in this work may help in establishing criteria for quality control and tracking the specific region of propolis production in different states of Brazil.

About Benzyl Alcohol, If you have any questions, you can contact Olegario, LS; Andrade, JKS; Andrade, GRS; Denadai, M; Cavalcanti, RL; da Silva, MAAP; Narain, N or concate me.. Safety of Benzyl Alcohol

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Design, synthesis and biological evaluation of fused naphthofuro[3,2-c]quinoline-6,7,12-triones and pyrano[3,2-c]quinoline-6,7,8,13-tetraones derivatives as ERK inhibitors with efficacy in BRAF-mutant melanoma WOS:000455479600032 published article about ACQUIRED-RESISTANCE; IN-VITRO; PROTEIN; DISCOVERY; DOCKING; PHOSPHORYLATION; ACTIVATION; PRODUCTS; QUINONES; BVD-523 in [Aly, Ashraf A.; El-Sheref, Essmat M.; Bakheet, Momtaz E. M.; Ibrahim, Mahmoud A. A.] Menia Univ, Fac Sci, Chem Dept, El Minia 61519, Egypt; [Mourad, Mai A. E.] Port Said Univ, Med Chem Dept, Fac Pharm, Port Said 42526, Egypt; [Kaoud, Tamer S.] Menia Univ, Fac Pharm, Dept Med Chem, El Minia 61519, Egypt; [Brase, Stefan] Karlsruhe Inst Technol, Inst Toxikol & Genet, Hermann von Helmholts Pl 1,Campus Nord, D-76344 Eggenstein Leopoldsha, Germany; [Brase, Stefan] Inst Toxikol & Genet, Hermann von Helmholts Pl 1,Campus Nord, D-76344 Eggenstein Leopoldsha, Germany; [Nieger, Martin] Univ Helsinki, Dept Chem, POB 55, Helsinki 00014, Finland; [Garvalov, Boyan K.] Mannhe Univ Heidelberg, Ctr Biomed & Med Technol Mannheim, Med Fac, D-68167 Mannheim, Germany; [Dalby, Kevin N.; Kaoud, Tamer S.] Univ Texas Austin, Div Chem Biol & Med Chem, Austin, TX 78712 USA in 2019, Cited 57. Formula: C9H7NO2. The Name is 4-Hydroxyquinolin-2(1H)-one. Through research, I have a further understanding and discovery of 86-95-3

Approximately 60% of human cancers exhibit enhanced activity of ERK1 and ERK2, reflecting their multiple roles in tumor initiation and progression. Acquired drug resistance, especially mechanisms associated with the reactivation of the MAPK (RAF/MEK/ERK) pathway represent a major challenge to current treatments of melanoma and several other cancers. Recently, targeting ERK has evolved as a potentially attractive strategy to overcome this resistance. Herein, we report the design and synthesis of novel series of fused naphthofuro[3,2-c] quinoline-6,7,12-triones 3a-f and pyrano[3,2-c]quinoline-6,7,8,13-tetraones 5a,b and 6, as potential ERK inhibitors. New inhibitors were synthesized and identified by different spectroscopic techniques and X-ray crystallography. They were evaluated for their ability to inhibit ERK1/2 in an in vitro radioactive kinase assay. 3b and 6 inhibited ERK1 with IC50s of 0.5 and 0.19 mu M, and inhibited ERK2 with IC50s of 0.6 and 0.16 mu M respectively. Kinetic mechanism studies revealed that the inhibitors are ATP-competitive inhibitors where 6 inhibited ERK2 with a K-i of 0.09 mu M. Six of the new inhibitors were tested for their in vitro anticancer activity against the NCI-60 panel of tumor cell lines. Compound 3b and 6 were the most potent against most of the human tumor cell lines tested. Moreover, 3b and 6 inhibited the proliferation of the BRAF mutant A375 melanoma cells with IC50s of 3.7 and 0.13 mu M, respectively. In addition, they suppressed anchorage-dependent colony formation. Treatment of the A375 cell line with 3b and 6 inhibited the phosphorylation of ERK substrates p-90RSK and ELK-1 and induced apoptosis in a dose dependent manner. Finally, a molecular docking study showed the potential binding mode of 3b and 6 within the ATP catalytic binding site of ERK2.

Formula: C9H7NO2. About 4-Hydroxyquinolin-2(1H)-one, If you have any questions, you can contact Aly, AA; El-Sheref, EM; Bakheet, MEM; Mourad, MAE; Brase, S; Ibrahim, MAA; Nieger, M; Garvalov, BK; Dalby, KN; Kaoud, TS or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Recently I am researching about STEP ECONOMY PASE; ONE-POT; CORROSION-INHIBITORS; MULTICOMPONENT REACTIONS; ORGANIC-SYNTHESIS; MILD-STEEL; PARTITION-COEFFICIENTS; ATOM ECONOMY; EFFICIENT; DERIVATIVES, Saw an article supported by the Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-03-00212]. COA of Formula: C9H7NO2. Published in MDPI in BASEL ,Authors: Ryzhkov, FV; Ryzhkova, YE; Elinson, MN; Vorobyev, SV; Fakhrutdinov, AN; Vereshchagin, AN; Egorov, MP. The CAS is 86-95-3. Through research, I have a further understanding and discovery of 4-Hydroxyquinolin-2(1H)-one

The Pot, Atom, and Step Economy (PASE) approach is based on the Pot economy principle and unites it with the Atom and Step Economy strategies; it ensures high efficiency, simplicity and low waste formation. The PASE approach is widely used in multicomponent chemistry. This approach was adopted for the synthesis of previously unknown hydroxyquinolinone substituted chromeno[2,3-b]pyridines via reaction of salicylaldehydes, malononitrile dimer and hydroxyquinolinone. It was shown that an ethanol-pyridine combination is more beneficial than other inorganic or organic catalysts. Quantum chemical studies showed that chromeno[2,3-b]pyridines has potential for corrosion inhibition. Real time H-1 NMR monitoring was used for the investigation of reaction mechanism and 2-((2H-chromen-3-yl)methylene)malononitrile was defined as a key intermediate in the reaction.

About 4-Hydroxyquinolin-2(1H)-one, If you have any questions, you can contact Ryzhkov, FV; Ryzhkova, YE; Elinson, MN; Vorobyev, SV; Fakhrutdinov, AN; Vereshchagin, AN; Egorov, MP or concate me.. COA of Formula: C9H7NO2

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

I found the field of Chemistry very interesting. Saw the article Synthesis of Nerol Derivatives Containing a 1,2,3-Triazole Moiety and Evaluation of Their Activities against Cancer Cell Lines published in 2019.0. Computed Properties of C7H8O, Reprint Addresses Teixeira, RR (corresponding author), Univ Fed Vicosa, Dept Quim, Av PH Rolfs S-N, BR-36570900 Vicosa, MG, Brazil.. The CAS is 100-51-6. Through research, I have a further understanding and discovery of Benzyl Alcohol

In the present investigation, a collection of twenty two nerol derivatives, containing 1,2,3-triazolic appendages, was synthesized and screened in vitro for their cytotoxic activity against HL60, Nalm6, and Jurkat human leukemia cells as well as against B16F10 (melanoma cell line). In most cases, derivatives were able to reduce cell viability. The most potent compound (Z)-4-(((3,7-dimethylocta-2,6-dien-1-yl)oxy)methyl)-1-(4-(trifluoromethoxy)benzyl)1H-1,2,3 triazole showed antiproliferative activity against Jurkat cells and reduced B16F10 cell migration. Physicochemical properties of the compounds were calculated in order to evaluate their potential for drug development. Most of the evaluated physicochemical parameters seemed to be favorable for drug development. In addition, for a better understanding of the biological activity results, 3D quantitative structure-activity relationship (QSAR) studies were carried out. 3D-QSAR studies indicate that the anticancer activities observed for the cell lines HL60 and Jurkat may occur by a similar mechanism of action and the same was found for the Nalm6 and B16F10 cell lines.

About Benzyl Alcohol, If you have any questions, you can contact Teixeira, RR; da Silva, AM; Siqueira, RP; Goncalves, VHS; Pereira, HS; Ferreira, RS; Costa, AV; de Melo, EB; Paula, FR; Ferreira, MMC; Bressan, GC or concate me.. Computed Properties of C7H8O

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Ultrasound promoted and Kit-6 mesoporous silica-supported Fe3O4 magnetic nanoparticles catalyzed cyclocondensation reaction of 4-hydroxycoumarin, 3,4-methylenedioxyphenol, and aromatic aldehydes WOS:000604548400001 published article about POT MULTICOMPONENT SYNTHESIS; ACIDIC IONIC LIQUID; GREEN SYNTHESIS; 3-COMPONENT SYNTHESIS; RECOVERABLE CATALYST; TIO2 NANOPARTICLES; EFFICIENT; DERIVATIVES; NANOCOMPOSITE; FE3O4-AT-SIO2-AT-KIT-6 in [Abdolmohammadi, Shahrzad] Islamic Azad Univ, East Tehran Branch, Dept Chem, POB 18735-138, Tehran, Iran; [Shariati, Shahab] Islamic Azad Univ, Rasht Branch, Dept Chem, Rasht, Iran; [Mirza, Behrooz] Islamic Azad Univ, Karaj Branch, Dept Chem, Karaj, Iran in 2021, Cited 80. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5. Computed Properties of C8H8O2

A new effective approach to synthesize a series of 7-aryl-6H,7H-[1]benzopyrano[4,3-b][1,3]dioxolo[4,5-g][1]benzopyran-6-ones was reported using Fe3O4@SiO2@Kit-6 as heterogeneous catalyst at room temperature under ultrasonic irradiation in aqueous media. This procedure is of great value due to its short reaction time, high yields, simple processing, and the use of easily available and magnetically recyclable heterogeneous catalyst.

Computed Properties of C8H8O2. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Abdolmohammadi, S; Shariati, S; Mirza, B or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

An article Novel Pyrazoloquinolin-2-ones: Design, synthesis, docking studies, and biological evaluation as antiproliferative EGFR-TK inhibitors WOS:000479184600037 published article about FACTOR RECEPTOR KINASE; SUBSTITUTED QUINOLINONES; PYRAZOLE DERIVATIVES; POTENTIAL ANTICANCER; ERLOTINIB; CANCER; CRIZOTINIB; CHEMISTRY; ASSAY in [Elbastawesy, Mohammed A., I; Ramadan, Mohamed] Al Azhar Univ, Fac Pharm, Dept Pharmaceut Organ Chem, Assiut 71524, Egypt; [Aly, Ashraf A.] Menia Univ, Fac Sci, Dept Chem, Al Minya 61519, Egypt; [Elshaier, Yaseen A. M. M.] Univ Sadat City, Fac Pharm, Dept Organ & Med Chem, Menoufia 32958, Egypt; [Youssif, Bahaa G. M.] Assiut Univ, Fac Pharm, Dept Pharmaceut Organ Chem, Assiut 71526, Egypt; [Brown, Alan B.] Florida Inst Technol, Program Chem, Melbourne, FL 32901 USA; [Abuo-Rahma, Gamal El-Din A.] Menia Univ, Fac Pharm, Dept Med Chem, Al Minya 61519, Egypt in 2019, Cited 50. Name: 4-Hydroxyquinolin-2(1H)-one. The Name is 4-Hydroxyquinolin-2(1H)-one. Through research, I have a further understanding and discovery of 86-95-3

Two new series of diethyl 2-[2-(substituted-2-oxo-1,2-dihydroquinolin-4-yl)hydrazono]-succinates 6a-g and 1-(2-oxo-1,2-dihydroquinolin-4-yl)-1H-pyrazoles 7a-f have been designed and synthesized. The structures of the synthesized compounds were proved by IR, mass, NMR (2D) spectra and elemental analyses. The target compounds were evaluated for their in vitro cytotoxic activity against 60 cancer cell lines according to NCI protocol. Consequently, seven compounds were further examined against the most sensitive cell lines, leukemia CCRFCEM, and MOLT-4. 5-Amino-1-(6-bromo-2-oxo-1,2-dihydroquinolin-4-yl)-1H-pyrazole-3,4-dicarbonitrile (7f) was the most active product, with IC50= 1.35 uM and 2.42 uM against MOLT-4 and CCRF-CEM, respectively. Also, it showed a remarkable inhibitory activity compared to erlotinib on the EGFR TK with IC50 = 247.14 nM and 208.42 nM, respectively. Cell cycle analysis of MOLT-4 cells treated with 7f showed cell cycle arrest at G2/M phase (supported by Caspases, BAX and Bcl-2 studies) with a significant pro-apoptotic activity as indicated by annexin V-FITC staining. Moreover, the docking study indicated that both the pyrazole moiety and the quinolin-2-one ring showed good fitting into EGFR (PDB code: 1M17). In order to interpret SAR of the designed compounds, and provide a basis for further optimization, molecular docking of the synthesized compounds to known EGFR inhibitors was performed. The study illustrated the effect of several factors on the compounds’ activity.

Name: 4-Hydroxyquinolin-2(1H)-one. About 4-Hydroxyquinolin-2(1H)-one, If you have any questions, you can contact Elbastawesy, MAI; Aly, AA; Ramadan, M; Elshaier, YAMM; Youssif, BGM; Brown, AB; Abuo-Rahma, GEDA or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Kapoor, G; Pathak, DP; Bhutani, R; Husain, A; Jain, S; Iqbal, MA in [Kapoor, Garima; Pathak, Dharam Pal; Bhutani, Rubina] Delhi Inst Pharmaceut Sci & Res, Dept Pharmaceut Chem, New Delhi 110017, India; [Husain, Asif; Iqbal, Md. Azhar] Hamdard Univ, Jamia Hamdard, Fac Pharm, Dept Pharmaceut Chem, New Delhi, India; [Jain, Sandeep] Guru Jambeshwar Univ Sci & Technol, Dept Pharmaceut Chem, Hisar, Haryana, India published Synthesis, ADME, docking studies and in vivo anti-hyperglycaemic potential estimation of novel Schiff base derivatives from octadec-9-enoic acid in 2019.0, Cited 40.0. COA of Formula: C7H6O2. The Name is 3-Hydroxybenzaldehyde. Through research, I have a further understanding and discovery of 100-83-4.

A new series of octadec-9-enoic acid schiff base entities (S1-S30) were designed and synthesized targeting peroxisome proliferator activated receptor-gamma for agonist action. Molinspiration software (online) was used to estimate drug like molecular properties of the metabolites. Docking disquisition on co-crystallized protein of PPAR-gamma (PDB ID 1FM9) was carried out which showed S21, S10 and S7 as best situated in the vital sites of receptor having docking scores – 9.19, – 8.68 and – 8.64 respectively. Free binding energy measured using model of Maestro 9.0 and was in range of from – 40.01 and – 80.54 kcal/mol, significant when compared with pioglitazone (- 51.58 Kcal/mol). Seven best docked derivatives were assessed for in-vivo oral glucose tolerance on normal rats and anti-hyperglycaemic activity by streptozotocin induced diabetes model. S21 unveiled to be the best measured analogue among all the synthesized entities. Encouraging outcomes motivates fatty acids for further development of more effective and safer compounds.

COA of Formula: C7H6O2. About 3-Hydroxybenzaldehyde, If you have any questions, you can contact Kapoor, G; Pathak, DP; Bhutani, R; Husain, A; Jain, S; Iqbal, MA or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

I found the field of Chemistry very interesting. Saw the article 4-Hydroxy-3-methyl-2(1H)-quinolone, originally discovered from a Brassicaceae plant, produced by a soil bacterium of the genus Burkholderia sp.: determination of a preferred tautomer and antioxidant activity published in 2020. Name: 4-Hydroxyquinolin-2(1H)-one, Reprint Addresses Igarashi, Y (corresponding author), Toyama Prefectural Univ, Biotechnol Res Ctr, 5180 Kurokawa, Imizu, Toyama 9390398, Japan.; Igarashi, Y (corresponding author), Toyama Prefectural Univ, Dept Biotechnol, 5180 Kurokawa, Imizu, Toyama 9390398, Japan.. The CAS is 86-95-3. Through research, I have a further understanding and discovery of 4-Hydroxyquinolin-2(1H)-one

4-Hydroxy-3-methyl-2(1H)-quinolone (1), a molecule known for a long time and recently discovered from a Brassicaceae plant Isatis tinctoria without providing sufficient evidence to support the structure, was isolated from a fermentation extract of Burkholderia sp. 3Y-MMP isolated from a soil by a Zn2+ enrichment culture. Detailed spectroscopic analyses by MS and NMR, combined with C-13 chemical shift comparison with literature values of the related compounds and a synthetic preparation of 1, allowed its first full NMR characterization and identification of 2-quinolone but not 2-quinolinol (2) as the preferred tautomer for this heterocyclic system. While the metal-chelating activity was negligible, compound 1 at 10 mu M, a concentration lower than that in liquid production cultures, quenched hydroxy radical-induced chemiluminescence emitted by luminol by 86%. Because some Burkholderia species are pathogenic to plants and animals, the above result suggests that 1 is a potential antioxidant to counteract reactive oxygen species-based immune response in the host organisms.

Name: 4-Hydroxyquinolin-2(1H)-one. About 4-Hydroxyquinolin-2(1H)-one, If you have any questions, you can contact Li, DD; Oku, N; Shinozaki, Y; Kurokawa, Y; Igarashi, Y or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

I found the field of Chemistry very interesting. Saw the article Synthesis of novel benzimidazoles at room temperature, under solvent-free condition and their biological studies published in 2021. Formula: C8H8O2, Reprint Addresses Gulati, S (corresponding author), Chaudhary Charan Singh Haryana Agr Univ, Dept Chem, Hisar 125004, Haryana, India.. The CAS is 123-11-5. Through research, I have a further understanding and discovery of 4-Methoxybenzaldehyde

An efficient and facile synthesis of substituted novel benzimidazoles (3a-3h) mediated by fruit juices viz.Cocos nuciferaL. juice,Citrus limettajuice andCitrus sinensisL. juice, via condensation of substituted aldehydes (1a-1h) ando-phenylenediammine (2a) under solvent-free condition at room temperature is presented in this paper. The purity of compounds was confirmed by melting point and thin layer chromatography. All synthesized compounds (3a-3h) were fully characterized via NMR and FTIR spectral data and evaluated for in vitro herbicidal activity againstRaphanus sativusL. (Radish) seeds. The compounds (3a-3h) were also evaluated for their antibacterial activity againstErwinia cartovoraandXanthomonas citriby inhibition zone method. Antifungal activity was also determined againstRhizoctonia solaniandColletotrichum gloeosporioidesby poisoned food techniques method. From activity data, it was found that compounds3dand3ewere most active againstR.sativusL. (root) andR.sativusL. (shoot), respectively. Compound3ghas shown maximum inhibition zone i.e. 8.00 mm againstE.cartovoraat 2000 mu g/mL concentration. MaximumX.citriigrowth was inhibited by compounds3ashowing inhibition zone 5.20 mm at highest concentration. Compound3fwas found most active againstR.solani and C.gloeosporioidesfungus at 2000 mu g/mL concentration. In comparison with the conventional methods, the present method complies with several key requirements of green chemistry principles such as the utilization of renewable feedstock, auxiliary aqueous conditions and reduces waste with the use of nature-derived catalyst. Therefore, the present method offers an attractive option because of its ecological safety, environmental acceptance, cost effective and easy workup process. [GRAPHICS] .

Formula: C8H8O2. About 4-Methoxybenzaldehyde, If you have any questions, you can contact Gulati, S; Singh, R; Sangwan, S; Rana, S or concate me.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

HPLC of Formula: C8H8O2. Ersatir, M; Turk, M; Giray, ES in [Ersatir, Mehmet; Giray, Elife Sultan] Cukurova Univ, Arts & Sci Fac, Dept Chem, TR-01330 Adana, Turkey; [Turk, Murat] Cukurova Univ, Vocat Sch Ceyhan, Dept Property Protect & Secur, Adana, Turkey published An efficient and green synthesis of 1,4-dihydropyridine derivatives through multi-component reaction in subcritical EtOH in 2021, Cited 41. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5.

A simple, environmentally friendly and highly efficient method has been developed for the synthesis of 1,4-dihydropyridine compounds. A number of aromatic aldehydes, ethylaceto acetate and urea converted into corresponding in l,4Dihydropyridine derivatives via one-pot multicomponent reaction in sub-critical ethanol. This study shown that 1,4-dihyropyridines can be synthesized in sub-critical ethanol and has the advantage of excellent yields, short reaction time, and simple work-up conditions.

About 4-Methoxybenzaldehyde, If you have any questions, you can contact Ersatir, M; Turk, M; Giray, ES or concate me.. HPLC of Formula: C8H8O2

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles