Catalytic co-cyclisation of α,ω-cyanoalkynes with alkynes: a versatile chemo- and regio-selective synthesis of 2,3-substituted 5,6,7,8-tetrahydroquinolines and other cycloalka[1,2-b]pyridines
作者:David J. Brien、Alaric Naiman、K. Peter C. Vollhardt
DOI:10.1039/c39820000133
日期:——
α,ω-Cyanoalkynes are catalytically cocylised with alkynes in the presence of dicarbonyl(cyclopentadiecyl)-cobalt to furnish [b]annuiated pyridineschemo- and regio-selectively.
在二羰基(环戊二烯基)-钴的存在下,将α,ω-氰基炔烃与炔烃催化羰基化,以化学和区域选择性地提供[ b ]环氧化的吡啶。
Adenosine derivatives and use thereof
申请人:Konno Takashi
公开号:US20050130930A1
公开(公告)日:2005-06-16
2-(6-Cyano-1-hexyn-1-yl)adenosine, 2-(6-cyano-1-hexyn-1-yl)adenosine 5′-monophosphate, or salts thereof; and drugs containing the same as an active ingredient. The compounds have excellent effects of lowering ocular tension, promoting blood flow in retina, and protecting optic nerve failure and are highly soluble in water. Owing to these characteristics, the compounds are useful as drugs such as remedies for glaucoma and ocular hypertension.