| 摘要 |
PCT No. PCT/GB97/01915 Sec. 371 Date Dec. 16, 1998 Sec. 102(e) Date Dec. 16, 1998 PCT Filed Jul. 15, 1997 PCT Pub. No. WO98/02417 PCT Pub. Date Jan. 22, 1998Process for obtaining an enantiomerically enriched N-acylazetine-2-carboxylic acid by selectine crystallization of a diastereoisomeric salt formed by relcting an enantiomer of the N-acylazetidine-2-carboxylic acid and an enantiomer of 1-phenylethylamine. |
