Synthesis of Substituted 3-Iodocoumarins and 3-Iodobutenolides via Electrophilic Iodocyclization of Ethoxyalkyne Diols
作者:Maddi Sridhar Reddy、Nuligonda Thirupathi、Madala Hari Babu、Surendra Puri
DOI:10.1021/jo400499r
日期:2013.6.21
A convenient and general synthesis of various 4-substituted 3-iodocoumarins and 4,5-disubstituted 3-iodobutenolides is described via an exclusive 6-endo-dig iodocyclization of 3-ethoxy-1-(2-alkoxyphenyl)-2-yn-1-ols and 5-endo-dig iodocyclization of 1-alkoxy-4-ethoxy-3-yn-1,2-diols, respectively. The reaction is carried out under very mild conditions using I2 in CH2Cl2 or toluene at room temperature
[EN] ENDOTHELIN RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DES RECEPTEURS A L'ENDOTHELINE
申请人:SMITHKLINE BEECHAM CORPORATION
公开号:WO1997004772A1
公开(公告)日:1997-02-13
(EN) Novel pyrroles, pyrazoles and triazoles, pharmaceutical compositions containing these compounds and their use as endothelin receptor antagonists are described.(FR) Nouveaux pyrroles, pyrazoles et triazoles, compositions pharmaceutiques contenant ces composés et leur utilisation comme antagonistes des récepteurs à l'endothéline.
Novel pyrroles, pyrazoles and triazoles, pharmaceutical compositions containing these compounds and their use as endothelin receptor antagonists are described.