Title: Preparation method of optically-active cotton phenol
Application Number: 87105990 Application Date: 1987.12.26
Publication Number: 1033795 Publication Date: 1989.07.12
Approval Pub. Date: Granted Pub. Date: 1993.11.17
International Classifi-cation: C07B55/00,C07B57/00,C07C47/57
Applicant(s) Name: Medicine Research Inst., Chinese Academy of Medica Address:
Inventor(s) Name: Huang Liang, Si Yikang
Attorney & Agent: TIANG YUE YU HUIJUN
Abstract:
     The present invention relates to the preperation method of cotton phenol with opticity and of the structural formula Ia or Ib. The said method includes: the hydrolysis of the condensation compound of positive or negative cotton phenol, which is purified if necessary, and amine with opticity; and the removal of the reflection with less content from the mixture of unequivalent positive and negative cotton-phenol reflections for getting the other reflection.
Time: 4
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