Tag: M.W=150-200

Recently I am researching about 1,5-BENZOTHIAZEPINE DERIVATIVES; ANTICANCER; ANTIOXIDANT, Saw an article supported by the Dean’s office of College of Pharmacy and Health Sciences, Ajman University, UAE. Published in ELSEVIER in AMSTERDAM ,Authors: Shaik, AB; Bhandare, RR; Nissankararao, S; Lokesh, BVS; Shahanaaz, S; Rahman, MM. The CAS is 120-14-9. Through research, I have a further understanding and discovery of 3,4-Dimethoxybenzaldehyde. Name: 3,4-Dimethoxybenzaldehyde

A series of twenty new chloropyrazine conjugated benzothiazepines (22-41) have been synthesized with 58%-95% yields. The compounds were characterized by using different spectroscopic techniques including FT-IR, H-1 NMR, C-13 NMR spectroscopy and mass spectrometry. The synthesized compounds (22-41) and their precursor chalcones (2-21) were evaluated for antitubercular and cytotoxic activities. Additionally, compounds 22-41 were also tested for antimicrobial activity. Among the chalcone series (2-21), compounds 7 and 14 showed significant antitubercular activities (MICs 25.51 and 23.89 mu M, respectively), whereas among benzothiazepines (22-41), compounds 27 and 34 displayed significant antimicrobial (MICs 38.02 mu M, 19.01 mu M) and antitubercular (MIC 18.10 mu M) activities. Compounds 7 and 41 displayed cytotoxic activities with IC50 of 46.03 +/- 1 and 35.10 +/- 2 mu M respectively. All the compounds were evaluated for cytotoxic activity on normal human liver cell lines (L02) and found to be relatively less selective towards this cell line. The most active compounds identified through this study could be considered as potential leads for the development of drugs with possible antimicrobial, antitubercular, and cytotoxic activities. (C) 2020 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.

Bye, fridends, I hope you can learn more about C9H10O3, If you have any questions, you can browse other blog as well. See you lster.. Name: 3,4-Dimethoxybenzaldehyde

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

Block, TM; Young, JAT; Javanbakht, H; Sofia, MJ; Zhou, TL in [Block, Timothy M.; Zhou, Tianlun] Baruch S Blumberg Inst, Doylestown, PA 18902 USA; [Young, John A. T.] F Hoffmann La Roche Ltd, Roche Innovat Ctr Basel, Roche Pharma Res & Early Dev, Basel, Switzerland; [Javanbakht, Hassan] SQZ Biotechnol, 200 Arsenal Yards Blvd,Suite 210, Watertown, MA 02472 USA; [Sofia, Michael J.] Arbutus Biopharma Inc, 701 Vet Circle, Warminster, PA 18974 USA published Host RNA quality control as a hepatitis B antiviral target in 2021, Cited 69. HPLC of Formula: C9H7NO2. The Name is 4-Hydroxyquinolin-2(1H)-one. Through research, I have a further understanding and discovery of 86-95-3.

Inhibition of the host RNA polyadenylating polymerases, PAPD5 and PAPD7 (PAPD5/7), with dihydroquinolizinone, a small orally available, molecule, results in a rapid and selective degradation of hepatitis B virus (HBV) RNA, and hence reduction in the amounts of viral gene products. DHQ, is a first in class investigational agent and could represent an entirely new category of HBV antivirals. PAPD5 and PAPD7 are noncanonical, cell specified, polyadenylating polymerases, also called terminal nucleotidyl transferases 4B and 4A (TENT4B/A), respectively. They are involved in the degradation of poor-quality cell transcripts, mostly noncoding RNAs and in the maturation of a sub-set of transcripts. They also appear to play a role in shielding some mRNA from degradation. The results of studies with DHQ, along with other recent findings, provide evidence that repression of the PAPD5/7 arm of the cell RNA quality control pathway, causes a profound (multifold) reduction rather than increase, in the amount of HBV pre-genomic, pre-core and HBsAg mRNA levels in tissue culture and animal models, as well. In this review we will briefly discuss the need for new HBV therapeutics and provide background about HBV transcription. We also discuss cellular degradation of host transcripts, as it relates to a new family of anti-HBV drugs that interfere with these processes. Finally, since HBV mRNA maturation appears to be selectively sensitive to PAPD5/7 inhibition in hepatocytes, we discuss the possibility of targeting host RNA quality control as an antiviral strategy.

HPLC of Formula: C9H7NO2. Bye, fridends, I hope you can learn more about C9H7NO2, If you have any questions, you can browse other blog as well. See you lster.

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 Concise, scalable and enantioselective total synthesis of prostaglandins WOS:000655716500001 published article about GENERAL STRATEGY; ACCESS in [Zhang, Fuhao; Zeng, Jingwen; Gao, Mohan; Wang, Linzhou; Chen, Gen-Qiang; Zhang, Xumu] Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen, Peoples R China; [Zhang, Fuhao; Zeng, Jingwen; Gao, Mohan; Wang, Linzhou; Chen, Gen-Qiang; Zhang, Xumu] Southern Univ Sci & Technol, Dept Chem, Shenzhen, Peoples R China; [Zhang, Fuhao; Lu, Yixin] Natl Univ Singapore, Dept Chem, Singapore, Singapore; [Chen, Gen-Qiang; Zhang, Xumu] Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Medi X, Shenzhen, Peoples R China in 2021, Cited 31. The Name is 3-(Trifluoromethyl)phenol. Through research, I have a further understanding and discovery of 98-17-9. Application In Synthesis of 3-(Trifluoromethyl)phenol

Prostaglandins are among the most important natural isolates owing to their broad range of bioactivities and unique structures. However, current methods for the synthesis of prostaglandins suffer from low yields and lengthy steps. Here, we report a practicability-oriented synthetic strategy for the enantioselective and divergent synthesis of prostaglandins. In this approach, the multiply substituted five-membered rings in prostaglandins were constructed via the key enyne cycloisomerization with excellent selectivity (>20:1 d.r., 98% e.e.). The crucial chiral centre on the scaffold of the prostaglandins was installed using the asymmetric hydrogenation method (up to 98% yield and 98% e.e.). From our versatile common intermediates, a series of prostaglandins and related drugs could be produced in two steps, and fluprostenol could be prepared on a 20-gram scale.

Application In Synthesis of 3-(Trifluoromethyl)phenol. About 3-(Trifluoromethyl)phenol, If you have any questions, you can contact Zhang, FH; Zeng, JW; Gao, MH; Wang, LZ; Chen, GQ; Lu, YX; Zhang, XM 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

Authors Honari, M; Sanaeishoar, H; Kiasat, AR; Mohammadi, MK in SPRINGER published article about in [Honari, Mehran; Sanaeishoar, Haleh; Kiasat, Ali Reza; Mohammadi, Mohammad Kazem] Islamic Azad Univ, Dept Chem, Ahvaz Branch, Ahvaz, Iran; [Kiasat, Ali Reza] Shahid Chamran Univ Ahvaz, Collage Sci, Dept Chem, Ahvaz, Iran in 2021.0, Cited 38.0. Recommanded Product: 3,4-Dimethoxybenzaldehyde. The Name is 3,4-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 120-14-9

A simple and efficient method for the synthesis of pyrazolopyranopyrimidines under solvent-free has been developed. The one-pot multicomponent condensation of arylaldehydes with hydrazine hydrate, ethyl acetoacetate and barbituric acid in the vicinity of a mesoporous basic nanomagnetic catalyst, namely DBU immobilized on Fe3O4@nSiO(2)@mSiO(2) was synthesized in remarkably high yields and in short reaction times. Significantly, this catalyst can be easily separated from the reaction media by applying an external magnet, and can be reused for several cycles. [GRAPHICS] .

Recommanded Product: 3,4-Dimethoxybenzaldehyde. Bye, fridends, I hope you can learn more about C9H10O3, If you have any questions, you can browse other blog as well. See you lster.

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 Biochemistry & Molecular Biology; Chemistry very interesting. Saw the article Catalyst-Solvent System for PASE Approach to Hydroxyquinolinone-Substituted Chromeno[2,3-b]pyridines Its Quantum Chemical Study and Investigation of Reaction Mechanism published in 2020. COA of Formula: C9H7NO2, Reprint Addresses Elinson, MN (corresponding author), Russian Acad Sci, ND Zelinsky Inst Organ Chem, Leninsky Pr 47, Moscow 119991, Russia.. 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.

Bye, fridends, I hope you can learn more about C9H7NO2, If you have any questions, you can browse other blog as well. See you lster.. 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

Product Details of 120-14-9. Authors Malasala, S; Ahmad, MN; Akunuri, R; Shukla, M; Kaul, G; Dasgupta, A; Madhavi, YV; Chopra, S; Nanduri, S in ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER published article about in [Malasala, Satyaveni; Akunuri, Ravikumar; Madhavi, Y., V; Nanduri, Srinivas] Natl Inst Pharmaceut Educ & Res NIPER, Dept Med Chem, Hyderabad 500037, Telangana, India; [Ahmad, Md Naiyaz; Shukla, Manjulika; Kaul, Grace; Dasgupta, Arunava; Chopra, Sidharth] CSIR Cent Drug Res Inst, Div Microbiol, Sitapur Rd,Sect 10, Lucknow 226031, Uttar Pradesh, India; [Ahmad, Md Naiyaz; Kaul, Grace; Dasgupta, Arunava; Chopra, Sidharth] AcSIR, Sect 19, Ghaziabad 201002, Uttar Pradesh, India in 2021.0, Cited 58.0. The Name is 3,4-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 120-14-9

Owing to the rapid rise in antibiotic resistance, infectious diseases have become serious threat to public health. There is an urgent need to develop new antimicrobial agents with diverse chemical structures and novel mechanisms of action to overcome the resistance. In recent years, Quinazoline-benzimidazole hybrids have emerged as a new class of antimicrobial agents active against S. aureus and M. tuberculosis. In the current study, we designed and synthesized fifteen new Quinazoline-benzimidazole hybrids and evaluated them for their antimicrobial activity against S. aureus ATCC 29213 and M. tuberculosis H37Rv. These studies led to the identification of nine potent antibacterial agents 8a, 8b, 8c, 8d, 8f, 8g, 8h, 8i and 10c with MICs in the range of 4-64 mu g/mL. Further, these selected compounds were found to possess potent antibacterial potential against a panel of drug-resistant clinical isolates which include methicillin and vancomycin-resistant S. aureus. The selected compounds were found to be less toxic to Vero cells (CC50 = 40->= 200 mu g/mL) and demonstrated a favourable selectivity index. Based on the encouraging results obtained these new benzimidazol-2-yl quinazoline derivatives have emerged as promising antimicrobial agents for the treatment of MDR-S. aureus and Mycobacterial infections. (C) 2020 Elsevier Masson SAS. All rights reserved.

Product Details of 120-14-9. Welcome to talk about 120-14-9, If you have any questions, you can contact Malasala, S; Ahmad, MN; Akunuri, R; Shukla, M; Kaul, G; Dasgupta, A; Madhavi, YV; Chopra, S; Nanduri, S or send Email.

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 Excellent antitumor and antimetastatic activities based on novel coumarin/pyrazole oxime hybrids WOS:000461402400039 published article about BIOLOGICAL EVALUATION; COUMARIN DERIVATIVES; MOLECULAR DOCKING; ANTICANCER ACTIVITY; PYRAZOLE; DESIGN; APOPTOSIS; POTENT; AGENTS; METASTASIS in [Dai, Hong; Huang, Meiling; Wang, Senling; Shi, Yujun; Yao, Yong; Ge, Shushan; Ling, Yong] Nantong Univ, Coll Chem & Chem Engn, Nantong 226019, Peoples R China; [Dai, Hong; Huang, Meiling; Qian, Jianqiang; Liu, Ji; Meng, Chi; Li, Yangyang; Ming, Guxu; Zhang, Ting; Ge, Shushan; Zhang, Yanan; Ling, Yong] Nantong Univ, Sch Pharm, Nantong 226001, Peoples R China; [Qian, Jianqiang; Liu, Ji; Meng, Chi; Li, Yangyang; Ming, Guxu; Zhang, Ting; Zhang, Yanan; Ling, Yong] Nantong Univ, Jiangsu Prov Key Lab Inflammat & Mol Drug Target, Nantong 226001, Peoples R China in 2019, Cited 49. The Name is 3-(Trifluoromethyl)phenol. Through research, I have a further understanding and discovery of 98-17-9. Recommanded Product: 98-17-9

A series of hybrids 10a-v based on coumarin/pyrazole oxime have been synthesized, and exhibit good to excellent antitumor activities. Compound 10n has shown remarkable anticancer effect on SMMC-7721 cells (IC50 = 2.08 mu M), which is considerably lower than 5-FU (IC50 = 37.8 mu M) and similar to ADM (IC50 = 2.67 mu M), with little effect on normal hepatic cells LO2. Notably, the suppression experiments of metastatic activities reveal that 10n also displays significant anti-metastasis effects through inhibiting cell migration and invasion in highly metastatic SMMC-7721 cell line, and dose-dependently reverses TGF-beta 1-induced epithelial-mesenchymal transition (EMT) procedure better than ADM. Finally, 10n also possesses low acute toxicity and potent tumor growth inhibitory property against SMMC-7721 cell lines in vivo. Our findings suggest that novel coumarin/pyrazole oxime hybrids are promising therapeutic agent candidates for further research. (C) 2019 Elsevier Masson SAS. All rights reserved.

Recommanded Product: 98-17-9. About 3-(Trifluoromethyl)phenol, If you have any questions, you can contact Dai, H; Huang, ML; Qian, JQ; Liu, J; Meng, C; Li, YY; Ming, GX; Zhang, T; Wang, SL; Shi, YJ; Yao, Y; Ge, SS; Zhang, YN; Ling, 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

An article Innate pharmacophore assisted selective C-H functionalization to therapeutically important nicotinamides WOS:000468001500010 published article about ARENES; BONDS; PERSPECTIVE; BENZAMIDES in [Song, Zehua; Wang, Guotong; Li, Wei; Li, Shengkun] Nanjing Agr Univ, Coll Plant Protect, Dept Pesticide Sci, Weigang 1, Nanjing 210095, Jiangsu, Peoples R China in 2019, Cited 39. COA of Formula: C7H5F3O. The Name is 3-(Trifluoromethyl)phenol. Through research, I have a further understanding and discovery of 98-17-9

The application of the pre-validated pharmacophore 2-(2-oxazolinyl) aniline as an innate directing group in the C-H etherification and amination of nicotinamides for the efficient synthesis of drug-and agrochemical- like molecules was determined. An operationally simple, and regioselective C-H functionalization of nicotinamides was first accomplished using a complicated variation of copper salts. All the specific procedures used were easy to utilize, without external oxidants or ligands. The feasibility is highlighted using an alternative synthesis of diflufenican with a rapid synthesis of niacin related pharmaceuticals or analogues.

COA of Formula: C7H5F3O. Bye, fridends, I hope you can learn more about C7H5F3O, If you have any questions, you can browse other blog as well. See you lster.

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

In 2020 EUR J MED CHEM published article about REVERSE-TRANSCRIPTASE INHIBITORS; DIARYLPYRIMIDINES DAPYS; BROAD POTENCY; DERIVATIVES; DISCOVERY; BENZOPHENONES; DOCKING; ANALOGS; FAMILY; SERIES in [Xiao, Ting; Tang, Jia-Fan; Liu, Gen-Yan; Xu, Zhi-Qiang; Wu, Feng-Shou; Gu, Shuang-Xi; Chen, Fen-Er] Wuhan Inst Technol, Sch Chem Engn & Pharm, Minist Educ, Key Lab Green Chem Proc, Wuhan 430205, Peoples R China; [Meng, Ge; Chen, Fen-Er] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China; [Pannecouque, Christophe] Katholieke Univ Leuven, Dept Microbiol & Immunol, Lab Virol & Chemotherapy, Rega Inst Med Res, B-3000 Leuven, Belgium; [Zhu, Yuan-Yuan] Wuhan Inst Technol, Sch Chem & Environm Engn, Wuhan 430205, Peoples R China in 2020, Cited 36. The Name is 3-(Trifluoromethyl)phenol. Through research, I have a further understanding and discovery of 98-17-9. Recommanded Product: 98-17-9

A series of indazolyl-substituted piperidin-4-yl-aminopyrimidines (IPAPYs) were designed from two potent HIV-1 NNRTIs piperidin-4-yl-aminopyrimidine 3c and diaryl ether 4 as the lead compounds by molecular hybridization strategy. The target molecules 5a-q were synthesized and evaluated for their anti-HIV activities and cytotoxicities in MT-4 cells. 5a-q displayed moderate to excellent activities against wild-type (WT) HIV-1 with ECK values ranging from 1.5 to 0.0064 mu M. Among them, 5q was regarded as the most excellent compound against WT HIV-1 (EC50 = 6.4 nM, SI = 2500). And also, it displayed potent activities against K103 N (EC50 = 0.077 mu M), Y181C (EC50 = 0.11 mu M), E138K (EC50 = 0.057 mu M), and moderate activity against double mutants RES056 (EC50 = 8.7 mu M). Moreover, the structure-activity relationships (SARs) were summarized, and the molecular docking was performed to investigate the binding mode of IPAPYs and HIV-1 reverse transcriptase. (C) 2019 Elsevier Masson SAS. All rights reserved.

Recommanded Product: 98-17-9. Bye, fridends, I hope you can learn more about C7H5F3O, If you have any questions, you can browse other blog as well. See you lster.

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 Synthesis, antitumor activity and structure-activity studies of novel pyridoxine-based bioisosteric analogs of estradiol WOS:000612171500005 published article about PHOSPHONIUM SALTS in [Pugachev, Mikhail, V; Pavelyev, Roman S.; Nguyen, Thang N. T.; Gabbasova, Raylya R.; Bulatov, Timur M.; Iksanova, Alfiya G.; Aljondi, Bashar; Bondar, Oksana, V; Grishaev, Denis Yu; Nikishova, Tatyana, V; Balakin, Konstantin, V; Shtyrlin, Yurii G.] Kazan Volga Reg Fed Univ, Kremlyovskaya 18, Kazan 420008, Russia; [Yamaleeva, Zilya R.; Kataeva, Olga N.] RAS, AE Arbuzov Inst Organ & Phys Chem, FRC Kazan Sci Ctr, Arbuzov Str 8, Kazan 420088, Russia in 2021.0, Cited 26.0. Computed Properties of C9H10O3. The Name is 3,4-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 120-14-9

A new efficient approach to the synthesis of 6-alkenyl substituted pyridoxine derivatives has been developed. A series of 31 novel alkenyl pyridoxine derivatives, stilbene-based bioisosteric analogs of estradiol, were synthesized. In vitro cytotoxicity of the obtained compounds against MCF-7 (ER+) breast cancer tumor cells was studied using the MTT assay. The most active compounds with IC50, MCF-7 < 10 mu M were also tested for cytotoxicity in vitro against MDA-MB-231 (ER-) breast adenocarcinoma cells and conditionally normal human skin fibroblasts (HSF). The patterns of structure-antitumor activity relationships of the obtained compounds were analyzed. The most active compounds were found to contain a six-membered ketal ring, a methyl group in position 5, a 3,4-dimethoxystyryl fragment in positions 2 or 6 of the pyridoxine ring, and a trans-configuration of the double bond. Using the most active compound 5a as a representative cytotoxic agent, we have demonstrated that it has high specificity and antiproliferative activity against MCF-7 (ER+) tumor cells (IC50 < 5 mu M), and a higher therapeutic index compared to the reference compound raloxifene (48 versus 5.8). Compound 5a decreased the mitochondrial membrane potential and increased the level of reactive oxygen species in MCF-7 cells, but not MDA-MB-231 cells. Compound 5a did not affect the distribution of cell cycle phases and induced apoptosis in MCF-7 cells, but not MDA-MB-231. Unlike compound 5a, raloxifene decreased mitochondrial potential, increased the ROS level, and induced apoptosis in both MCF-7 and MDA-MB-231 cells, which indicated a lack of selectivity for cells with estrogen receptor expression. It was also shown that compound 5a reduced the level of ER alpha expression in cells to a lesser extent than raloxifene and, unlike the latter, did not activate the PI3K/Akt signaling pathway. Computed Properties of C9H10O3. Welcome to talk about 120-14-9, If you have any questions, you can contact Pugachev, MV; Pavelyev, RS; Nguyen, TNT; Gabbasova, RR; Bulatov, TM; Iksanova, AG; Aljondi, B; Bondar, OV; Grishaev, DY; Yamaleeva, ZR; Kataeva, ON; Nikishova, TV; Balakin, KV; Shtyrlin, YG or send Email.

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