- 作者: 翁啟惠; 王光燦
- 作者服務機構: Institute of Biological Chemistry, Academia Sinica, P. O. Box 23-106 Taipei, Taiwan 107
- 中文摘要:
D(—)Ephedrine was prepared by resolving the racemate through its N-benzyloxycarbonyl-L-phenylalanine salt in ether solution. The L(+)-ephedrine in mother liquid was recovered and precipitated exclusively with N-benzyloxy-carbonyl-L-alanine in ethyl acetate. The amino acid derivatives were recovered from the salts by acid decomposition and the optically pure ephedrine was also recovered, which was again useful for the resolution of racemic amino acid derivatives synthesized chemically. Other amino acid derivatves are also tested for the mutual resolution.
Mutual resolution was also effected by dissolving DL-ephedrine and N-benzyloxycarbonyl-DL-alanine in ethyl acetate to obtain the optically pure D(—)-ephedrine and N-benzyloxycarbonyl-D-alanine. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --