An Enyne Metathesis/(4 + 2)- Dimerization Route to (±)-Differolide
摘要:
[GRAPHICS]A concise total synthesis of (+/-)-differolide (1) has been achieved. 2-Vinylbutenolide (2) was prepared by enyne metathesis of allyl propynoate (3) using the Grubbs initiator 4, This reaction was examined by H-1 NMR spectroscopy, which led to the hypothesis that low concentration of ruthenium species and high concentration of enyne substrate would be advantageous. Accordingly, slow addition of 4 to solutions of enyne 3 was found to be beneficial. Spontaneous dimerization of 2 gave (+/-) differolide (1) and an isomer.
Development of a Method for the Synthesis of a-Substituted a,b-Unsaturated Lactones Based on Stille-Type Pd-catalyzed Carbonylation of (Z)-w-Iodoalkenols. An Efficient and Selective Synthesis of (+)-Hamabiwa-lactone B
ANDROGRAPHOLIDE DERIVATIVES AND USE THEREOF IN MANUFACTURE OF MEDICAMENTS
申请人:Panorama Research Inc.
公开号:EP2176255B1
公开(公告)日:2012-02-29
Hydroxamate compositions
申请人:Covidien LP
公开号:EP2177226B1
公开(公告)日:2013-09-18
Development of a Method for the Synthesis of a-Substituted a,b-Unsaturated Lactones Based on Stille-Type Pd-catalyzed Carbonylation of (Z)-w-Iodoalkenols. An Efficient and Selective Synthesis of (+)-Hamabiwa-lactone B
作者:Ei-ichi Negishi、Baiqiao Liao
DOI:10.3987/com-99-s138
日期:——
An Enyne Metathesis/(4 + 2)- Dimerization Route to (±)-Differolide
作者:Thomas R. Hoye、Scott M. Donaldson、Tricia J. Vos
DOI:10.1021/ol9905912
日期:1999.7.1
[GRAPHICS]A concise total synthesis of (+/-)-differolide (1) has been achieved. 2-Vinylbutenolide (2) was prepared by enyne metathesis of allyl propynoate (3) using the Grubbs initiator 4, This reaction was examined by H-1 NMR spectroscopy, which led to the hypothesis that low concentration of ruthenium species and high concentration of enyne substrate would be advantageous. Accordingly, slow addition of 4 to solutions of enyne 3 was found to be beneficial. Spontaneous dimerization of 2 gave (+/-) differolide (1) and an isomer.