A one-pot “back-to-front” approach for the synthesis of benzene ring substituted indoles using allylboronic acids
作者:Ganesh Karan、Samrat Sahu、Modhu Sudan Maji
DOI:10.1039/d1cc01512e
日期:——
Synthesis of only benzene ring functionalized indoles and poly-substituted carbazoles is reported via a one-pot triple cascade benzannulation protocol. Usage of differently substituted and readily accessible allylboronic acids as a 3-carbon annulating partner enables diverse aliphatic and aromatic substitution patterns, which is still a daunting task. This scalable synthetic protocol tolerates broad
Diastereoselective allylation and crotylation of N-unsubstituted imines derived from ketones
作者:Bhartesh Dhudshia、Jorge Tiburcio、Avinash N. Thadani
DOI:10.1039/b511411j
日期:——
A wide variety of tertiary carbinamines are synthesized in high yields via diastereoselective allylation and crotylation of in situ generated N-unsubstituted ketimines.
通过立体选择性的烯丙基化和巴豆基化反应,在原位生成了未取代的N-酮亚胺,进而高效合成了多种叔碳胺。
Potassium allyl- and crotyltrifluoroborates: Stable and efficient agents for allylation and crotylation
作者:Robert A. Batey、Avinash N. Thadani、David V. Smil
DOI:10.1016/s0040-4039(99)00774-1
日期:1999.6
Potassium allyl- and crotyltrifluoroborates react rapidly with aldehydes in the presence of BF3·Et2O. These salts are stable to air and moisture, and lead to adducts in high yield and with high diastereoselectivity. The stereochemistry of the crotylated products is consistent with the reaction via allylboron difluoride and a Zimmerman-Traxler like transition state.
[EN] BETA-LACTAMASE INHIBITOR COMPOUNDS<br/>[FR] COMPOSÉS INHIBITEURS DE BÊTA-LACTAMASE
申请人:ENTASIS THERAPEUTICS LTD
公开号:WO2018053215A1
公开(公告)日:2018-03-22
The present invention is directed to compounds which are beta-lactamase inhibitors. The compounds and their pharmaceutically acceptable salts are useful in combination with beta- lactam antibiotics, for the treatment of bacterial infections, including infections caused by drug resistant organisms, including multi-drug resistant organisms. The present invention includes compounds according to Formula (I): or a pharmaceutically acceptable salt thereof, wherein the values of R1, R2, R3, R4, R5 and R6 are described herein.
作者:Steven V. Ley、Miles N. Tackett、Matthew L. Maddess、James C. Anderson、Paul E. Brennan、Michael W. Cappi、Jag P. Heer、Céline Helgen、Masakuni Kori、Cyrille Kouklovsky、Stephen P. Marsden、Joanne Norman、David P. Osborn、María Á. Palomero、John B. J. Pavey、Catherine Pinel、Lesley A. Robinson、Jürgen Schnaubelt、James S. Scott、Christopher D. Spilling、Hidenori Watanabe、Kieron E. Wesson、Michael C. Willis
DOI:10.1002/chem.200801656
日期:2009.3.9
Rapamycin (1) is a macrocyclic natural product, established as a potent immunosuppressant and currently of interest to the scientific community as the framework for a series of novel anticancer drugs. Extensive studies have culminated in a new convergent totalsynthesis of 1, which features a number of group‐derived methodologies and an unusual catechol‐templating strategy for the construction of the