Synthesis of halogenated/nitrated flavone derivatives and evaluation of their affinity for the central benzodiazepine receptor
摘要:
A series of halogenated/nitrated flavone compounds were synthesized. Some of the products were found to be potent central benzodiazepine receptor (BDZ-R) ligands. The structure-activity relationships (SAR) analysis of the new synthetic compounds, together with that of others already described, indicates that substitutions at position 6 or 6 and 3' in the flavone nucleus are the only ones that give rise to high affinity BDZ-R ligands. (C) 1997 Elsevier Science Ltd.
Rh(III)‐Catalyzed Aldehydic C−H Functionalization Reaction between Salicylaldehydes and Sulfoxonium Ylides
作者:Guo‐Dong Xu、Kenneth L. Huang、Zhi‐Zhen Huang
DOI:10.1002/adsc.201900276
日期:2019.7.11
A novel aldehydic C−H functionalization reactionbetween salicylaldehydes and sulfoxonium ylides has been developed under rhodium(III) catalysis, affording coupling products in moderate to good yields. A plausible mechanism involving aldehydic C(sp2)−H activation by rhodium(III) and rhodium(III) catalyzed carbene insertion is also proposed. It was also found that the aldehydic C−H functionalization