Synthesis and calcium antagonistic activity of a series of diethyl benzofuryl, benzothienyl and benzogammapyronyl benzylphosphonates
摘要:
In this work we present about 15 original heterocyclic diethyl benzylphosphonate analogues of fostedil, in which we have varied the nature of the heterocycle, the substituents or the phosphonic group, or even the position of this latter. Three diethyl 4-(2-benzofuryl) benzyl phosphonates exhibited slightly higher calcium antagonism than the control. Solely substitution with a fluorine atom was able to maintain activity, whereas the other modifications always decreased it.
A concise route to functionalized benzofurans directly from gem-dibromoalkenes and phenols
作者:Maddali L. N. Rao、Priyabrata Dasgupta
DOI:10.1039/c5ra13213d
日期:——
A tandem strategy for the construction of benzofuran motifs has been developed directly from gem-dibromoalkenes and phenols under palladium-catalyzed conditions.
已经开发了一种从gem-二溴代烯烃和酚直接在钯催化条件下构建苯并呋喃基团的串联策略。
Compounds including carboxystyrylphenyl group
申请人:Sterling Drug Inc.
公开号:US03974144A1
公开(公告)日:1976-08-10
Benzofurans, benzothiophenes, and naphthofurans which are substituted by carboxystyrylphenyl groups and their corresponding esters and amides are optical brightening agents useful for whitening and brightening natural and synthetic fibers, papers, resins and the like. The compounds are conveniently prepared by interacting benzofurans, benzothiophenes or naphthofurans, which are substituted by a p-tolyl group, with an aromatic aldehyde or preferably the anil derivative thereof.
作者:Yao, Jiaxin、Xiao, Yuxuan、Li, Haiyan、Yang, Xun、Du, Jiahui、Yin, Ying、Feng, Lin、Duan, Wengui、Yu, Lin
DOI:10.1021/acs.orglett.4c02340
日期:——
can be arylated at the α-position in moderate to good yields. Mechanistic studies demonstrate that the reaction proceeds via a CMD pathway, with C–Hbondactivation as the rate-determining step. Furthermore, the scalability and applicability in the synthesis of a drug molecule exemplify the utility of this protocol.
In this work we present about 15 original heterocyclic diethyl benzylphosphonate analogues of fostedil, in which we have varied the nature of the heterocycle, the substituents or the phosphonic group, or even the position of this latter. Three diethyl 4-(2-benzofuryl) benzyl phosphonates exhibited slightly higher calcium antagonism than the control. Solely substitution with a fluorine atom was able to maintain activity, whereas the other modifications always decreased it.