A New Synthetic Route to 1,5-Benzothiazepines. Synthesis of Derivatives of Diltiazem.
作者:Tsunehiro HARADA、Masamichi MORIMOTO、Masaaki NAGASAWA、norio TAKAMURA、Hirozumi INOUE、Tokuro OH-ISHI、Mikio TAKEDA
DOI:10.1248/cpb.40.1986
日期:——
Several derivatives of diltiazem (9a-c) have been synthesized from the oxamate (6) through the carbon-carbon ring closure of the sulfur-stabilized benzylic anion and the ester carbonyl group, followed by stereoselective reduction of the C3-carbonyl of the 1, 5-benzothiazepine-dione (7).
通过硫稳定苄基阴离子和酯羰基的碳-碳环闭合,然后立体选择性还原 1,5-苯并硫氮杂卓二酮的 C3-羰基,从草酸盐(6)合成了多种地尔硫卓衍生物(9a-c)(7)。