Design, synthesis and biological evaluation of novel ring-opened cromakalim analogues with relaxant effects on vascular and respiratory smooth muscles and as stimulators of elastin synthesis
vascular smooth muscle cells showed a strong stimulating effect on elastin synthesis, especially compound B16, which was more active at 20 μM than diazoxide, a reference ATP-sensitive potassium channel activator. Taken together, our results show that the N-methylation of the sulfonylurea moieties of ring-opened cromakalim analogues led to new compounds blocking calcium-gated channels, which had a major
Catalytic Enantioselective Hydroxylation of Tertiary Propargylic C(sp3)–H Bonds in Acyclic Systems: a Kinetic Resolution Study
作者:Min Cao、Hongliang Wang、Fangao Hou、Yuhang Zhu、Qianqian Liu、Chen-Ho Tung、Lei Liu
DOI:10.1021/jacs.4c03610
日期:2024.7.10
report a practical manganese-catalyzed enantio-differentiating hydroxylation of tertiarypropargylic C–H bonds in acyclic systems, producing a wide range of structurally diverse enantioenriched tertiary propargyl alcohols in high efficiency with extremely efficient chemo- and enantio-discrimination. Other features include the use of C–H substrates as the limiting reagent, noteworthy functional group compatibility