Enantioselective Michael Addition/Iminium Ion Cyclization Cascades of Tryptamine-Derived Ureas
摘要:
A Michael addition/iminium ion cyclization cascade of enones with tryptamine-derived ureas under BINOL phosphoric acid (BPA) catalysis Is reported. The cascade reaction tolerates a wide variety of easily synthesized tryptamine-derived ureas, including those bearing substituents on the distal nitrogen atom of the urea moiety, affording polyheterocyclic products in good yields and good to excellent enantioselectivities.
New indole derivatives as ACAT inhibitors: synthesis and structure-activity relationships
摘要:
A series of ureas containing the indole group were synthesized and assessed for their ability to inhibit arterial and intestinal ACAT and to lower plasma total cholesterol in a cholesterol-fed rat model. The structural modulations carried out in this series led to compounds which proved to be very active in both the inhibition of aortic ACAT in vitro and the inhibition of rat cholesterol intestinal absorption in vivo. Several compounds from this series exhibit a remarkable hypocholesterolaemic effect with ED(25) less than 0.1 mg/kg po.
Design, synthesis, and biological evaluation of phenylurea indole derivatives as ABCG2 inhibitors
作者:Gao-Jie Ye、Chao-Yun Cai、Xing-Duo Dong、Zhuo-Xun Wu、Qiu-Xu Teng、Jing-Quan Wang、Zhe-Sheng Chen、Bo Wang
DOI:10.1016/j.bioorg.2023.106481
日期:2023.6
Three series of phenylurea indole derivatives were synthesized with potent inhibitory activities on ABCG2 with simple and efficient synthetic routes. Among these compounds, four phenylurea indole derivatives 3c-3f with extended π system were discovered as the most potent ABCG2 inhibitors, while these compounds showed no inhibition on ABCB1. Compounds 3c and 3f were selected for further investigation
Enantioselective Michael Addition/Iminium Ion Cyclization Cascades of Tryptamine-Derived Ureas
作者:Isabelle Aillaud、David M. Barber、Amber L. Thompson、Darren J. Dixon
DOI:10.1021/ol401039h
日期:2013.6.21
A Michael addition/iminium ion cyclization cascade of enones with tryptamine-derived ureas under BINOL phosphoric acid (BPA) catalysis Is reported. The cascade reaction tolerates a wide variety of easily synthesized tryptamine-derived ureas, including those bearing substituents on the distal nitrogen atom of the urea moiety, affording polyheterocyclic products in good yields and good to excellent enantioselectivities.
New indole derivatives as ACAT inhibitors: synthesis and structure-activity relationships
作者:R Bellemin、J Decerprit、D Festal
DOI:10.1016/0223-5234(96)80445-4
日期:1996.1
A series of ureas containing the indole group were synthesized and assessed for their ability to inhibit arterial and intestinal ACAT and to lower plasma total cholesterol in a cholesterol-fed rat model. The structural modulations carried out in this series led to compounds which proved to be very active in both the inhibition of aortic ACAT in vitro and the inhibition of rat cholesterol intestinal absorption in vivo. Several compounds from this series exhibit a remarkable hypocholesterolaemic effect with ED(25) less than 0.1 mg/kg po.