发明授权
- 专利标题： Vitamin D.sup.3 derivative and production process thereof
- 专利标题（中）： 维生素D3衍生物及其制备方法
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申请号： US971201申请日： 1997-11-14
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公开(公告)号： US5986112A公开(公告)日： 1999-11-16
- 发明人: Masayasu Tabe , Atsuo Hazato , Kenji Manabe , Qingzhi Gao , Hiroko Tanaka
- 申请人： Masayasu Tabe , Atsuo Hazato , Kenji Manabe , Qingzhi Gao , Hiroko Tanaka
- 申请人地址： JPX Osaka
- 专利权人： Teijin Limited
- 当前专利权人： Teijin Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX6-125144 19940607; JPX6-220185 19940914; JPX6-223229 19940919
- 主分类号： C07C69/675
- IPC分类号： C07C69/675 ; C07C69/716 ; C07C69/732 ; C07C401/00 ; C07D307/33 ; C07D307/58 ; C07D317/34 ; C07F7/18 ; C07F7/08
摘要：
A vitamin D.sub.3 derivative represented by the following formula: wherein, R is, independently, a hydrogen atom, tri(C.sub.1 to C.sub.7 hydrocarbon)silyl group, C.sub.2 to C.sub.8 acyl group, or group forming an acetal bond together with an oxygen atom of a hydroxyl group, A is ##STR1## where, R.sup.1 is a methyl group or methylene group, and when R.sup.1 is a methylene group, the bond between the R.sup.1 and the 3-position of the lactone ring is a double bond, R.sup.2 is a hydrogen atom or C.sub.1 to C.sub.3 alkyl group, R.sup.3 is a hydrogen atom, or R.sup.2 and R.sup.3 together indicate a substitutable single methylene group.
公开/授权文献
- US5445765A Petroleum emulsion breakers 公开/授权日：1995-08-29
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