申请人:The Procter & Gamble Company
公开号:US04345984A1
公开(公告)日:1982-08-24
A novel process for the oxidation of olefins to the corresponding alpha-epoxy alcohols which can be incorporated in the total synthesis of members of a novel class of prostaglandin analogues. Olefins are reacted with singlet oxygen in the presence of a group IVB, VB or VIB transition metal catalyst, excluding chromium. The reaction is fast and highly selective to the alpha-epoxy alcohol. When cyclopentene is oxidized in the process of the invention, high yields of cis 2,3-epoxy-cyclopentan-1-ol are obtained. The latter compound is used as a starting material in the synthesis of prostaglandin analogues. The prostanoids of the invention are characterized by an oxa group replacing the methylene group at the 7-position, and the absence of a hydroxyl or other substituent at the 11-position. Members of this class of prostanoids show important cytoprotective properties in animal tests.
一种新的工艺用于将烯烃氧化成相应的α-环氧醇,该工艺可以被纳入一类新型前列腺素类似物的全合成中。在IVB、VB或VIB族过渡金属催化剂(不包括铬)的存在下,烯烃与单线态氧反应。该反应速度快,高选择性地生成α-环氧醇。当环戊烯在该发明的过程中被氧化时,可以获得高产率的顺式2,3-环氧环戊烷-1-醇。后者可用作合成前列腺素类似物的起始物质。该发明中的前列腺素类似物的特点是,在7-位置取代亚甲基基团的氧杂基,而在11-位置缺乏羟基或其他取代基。该类前列腺素类似物在动物试验中表现出重要的细胞保护性能。