Stereospecific synthesis of (Z) or (E)-3-methylalk-2-enoic acids
作者:Mohamed Abarbri、Jean-Luc Parrain、Alain Duchêne
DOI:10.1016/0040-4039(95)00285-k
日期:1995.4
The palladiumcatalysed coupling of organozinc or organotin reagents with 3-iodobut-2(or 3)-enoic acid is stereoselective and affords Z(or E)-3-methylalk-2-enoic acids. The method was applied to the synthesis of the E and Z stereoisomers of ocimenones and pseudo-tagetones.
Total synthesis and biological evaluation of methylgerambullone
作者:Jong Taik Moon、Sung Hoon Ha、So Hyung Lee、Tae Hui Kwon、Chun Rim Oh、Young Deuk Kim、Jungahn Kim、Dong Joon Choo、Jae Yeol Lee
DOI:10.1016/j.bmcl.2009.11.040
日期:2010.1
First total synthesis of methylgerambullone (MGB, 1) isolated from Glycosmis angustifolia was completed via a convergent route. The effect of MGB on the contractile responses of the isolated guinea-pig ileum induced by acetylcholine was investigated. As a result, it showed a potent relaxation rate (78.66 +/- 4.30% at 100 mg/L) in a concentration-dependent manner on longitudinal smooth muscle contraction of isolated guinea-pig ileum induced by 1 mu M acetylcholine. (C) 2009 Elsevier Ltd. All rights reserved.
Abarbri Mohamed, Parrain Jean-Luc, Duchene Alain, Tetrahedron Lett., 36 (1995) N 14, S 2469-2472