| 摘要 |
PCT No. PCT/FR91/00133 Sec. 371 Date Aug. 21, 1992 Sec. 102(e) Date Aug. 21, 1992 PCT Filed Feb. 20, 1991 PCT Pub. No. WO91/13066 PCT Pub. Date Sep. 5, 1991.A method for preparing beta -phenylglycidic-(2R, 3R) acid optionally in the form of salt or ester by precipitation of the salt of the beta -phenylglycidic-(2R,3R) acid with (+)- alpha -methylbenzylamine-(R) in a solution of a mixture of salts of cis and trans beta -phenylglycidic acids with (+)- alpha -methylbenzylamine(R)- and the use of the resulting product for preparing taxol and its analogs. |
