| 摘要 |
PCT No. PCT/EP92/02515 Sec. 371 Date May 6, 1994 Sec. 102(e) Date May 6, 1994 PCT Filed Nov. 3, 1992 PCT Pub. No. WO93/10118 PCT Pub. Date May 27, 1993.A process for preparing (6S)-5-methyltetrahydrofolic acid by resolution of racemic (6R,S)-5-methyltetrahydrofolic acid using a base, wherein the base is N-ethyl-2-aminomethylpyrrolidine or its optical isomers. |
