Synthesis of Reversed
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‐Acyl Glycosides through Ni/Photoredox Dual Catalysis
作者:Shorouk O. Badir、Audrey Dumoulin、Jennifer K. Matsui、Gary A. Molander
DOI:10.1002/anie.201800701
日期:2018.5.28
incorporation of C‐glycosides in drug design has become a routine practice for medicinal chemists. These naturally occurring building blocks exhibit attractive pharmaceutical profiles, and have become an important target of synthetic efforts in recent decades.1 Described herein is a practical, scalable, and versatile route for the synthesis of non‐anomeric and unexploited C‐acyl glycosides through a Ni/photoredox
Direct Conversion of Carboxylic Acids to Alkyl Ketones
作者:Javad Amani、Gary A. Molander
DOI:10.1021/acs.orglett.7b01588
日期:2017.7.7
efficient and mild method for acyl–Csp3 bond formation based on the directconversion of carboxylicacids has been established. This protocol is enabled by the synergistic, Ir-photoredox/nickel catalytic cross-coupling of in situ activated carboxylicacids and alkyltrifluoroborates. This versatilemethod is amenable to the cross-coupling of structurally diverse carboxylicacids with various potassium
作者:Pradeep K. Singh、Hao Fan、Xiuju Jiang、Lei Shi、Carl F. Nathan、Gang Lin
DOI:10.1002/cmdc.201600384
日期:2016.10.6
noncovalent proteasomeinhibitors. Herein we report that the insertion of a β‐amino acid into N,C‐capped dipeptides markedly decreases their inhibitory potency against human constitutive proteasomeβ5c, while maintaining potent inhibitory activity against human immunoproteasome β5i, thereby achieving thousands‐fold selectivity for β5i over β5c. Structure–activity relationship studies revealed that β5c does