Highly Stereoselective 1,4-Addition of the Enolate Generated from 6-Deoxy-<scp>d</scp>-Glucopyranoside-Derived Propionyl Ester to Methyl Crotonate: Application to Total Synthesis of (-)-Lasiol
作者:Kin-ichi Tadano、Shingo Asano、Tetsuo Tamai、Kiichiro Totani、Ken-ichi Takao
DOI:10.1055/s-2003-42061
日期:——
1,4-Addition of the enolate generated from methyl 6-deoxy-2,3-di-O-(t-butyldimethylsilyl)-4-O-propionyl-α-D-glucopyranoside to methyl crotonate provided a single anti-adduct with exceptionally high stereoselectivity. Fromthis adduct, (-)-lasiol, an acyclic monoterpene alcohol isolated from the males of Lasius meridionalis ants, was synthesized concisely.
6-脱氧-2,3-二-O-(叔丁基二甲基甲硅烷基)-4-O-丙酰基-α-D-吡喃葡萄糖苷甲酯生成的烯醇1,4-加成到巴豆酸甲酯提供了一种单一的抗加合物极高的立体选择性。从此加合物中,简明地合成了 (-)-lasiol,一种从 Lasius meridionalis 蚂蚁雄性中分离出来的无环单萜醇。