发明名称 |
Method for manufacturing betulinic acid |
摘要 |
The present invention provides a method for preparing betulin-3-acetate including alcoholyzing betulin 3,28-dibenzoate; a process for preparing betulin-3-acetate including: (1) acylating betulin to provide betulin 3,28-dibenzoate and (2) alcoholyzing betulin 3,28-dibenzoate to provide betulin-3-acetate; and a process for preparing betulinic acid including: (1) acylating betulin to provide betulin 3,28-dibenzoate; (2) alcoholyzing betulin 3,28-dibenzoate to provide betulin-3-acetate; (3) oxidizing betulin-3-acetate to provide betulinic aldehyde-3-acetate; (4) oxidizing betulinic aldehyde-3-acetate to provide betulinic acid-3-acetate; and (5) deprotecting betulinic acid-3-acetate to provide betulinic acid.
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申请公布号 |
US2001007908(A1) |
申请公布日期 |
2001.07.12 |
申请号 |
US20010761351 |
申请日期 |
2001.01.16 |
申请人 |
REGENTS OF THE UNIVERSITY OF MINNESOTA, NATURTEK, LLC |
发明人 |
KRASUTSKY PAVEL A.;CARLSON ROBERT M.;NESTERENKO VITALIY V. |
分类号 |
C07C67/29;C07C45/64;C07C47/46;C07C51/16;C07C51/235;C07C51/367;C07C62/06;C07C62/32;C07C69/00;C07C69/16;(IPC1-7):C11C3/00 |
主分类号 |
C07C67/29 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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