Asymmetric cyclopropanation of chiral (1-dimethoxyphosphoryl-2-phenyl)vinyl p-tolyl sulfoxide: a new synthesis of enantiomerically pure 2-amino-3-phenyl-1-cyclopropane-phosphonic acid—a constrained analog of phaclofen
作者:Wanda H Midura、Marian Mikołajczyk
DOI:10.1016/s0040-4039(02)00374-x
日期:2002.4
a highly diastereoselective manner. The major diastereomer obtained in the reaction of E-(S)-3 with EDSA was converted into enantiopure (2R)-amino-(3R)-phenyl-(1R)-cyclopropane-phosphonic acid, a constrained analog of the GABAB antagonist, phaclofen.
发现E-(S)-(1-二甲氧基磷酰基-2-苯基)乙烯基对甲苯基亚砜3与乙硫醚[二甲基(氧代)ulf,亚丙基二苯基sulf和(二甲基磺酰亚硫基)乙酸乙酯(EDSA)]进行环丙烷化。以高度非对映选择性的方式。E-(S)-3与EDSA反应中得到的主要非对映异构体被转化为对映体(2 R)-氨基-(3 R)-苯基-(1 R)-环丙烷膦酸,是该化合物的受限类似物。 GABA B拮抗剂,phaclofen。