(1) DL-threo-O-Methylphenylserine has been isolated through its N-formyl derivative from the diastereomeric mixture of O-methylphenylserines which was prepared by the route of Van Loon and Carter. (2) DL-threo-O-Methylphenylserine has been led to DL-threo-2-amino-1-p-nitrophe-nyl-1,3-propanediol and further to DL-chloramphenicol. (3) The other diastereomer of O-methylphenylserine (m. p. 251–253°C)
(1) DL-threo-O-
甲基苯基丝氨酸是通过其N-甲酰基衍
生物从Van Loon和Carter路线制备的O-
甲基苯基丝氨酸的非对映异构混合物中分离出来的。(2) DL-threo-O-Methylphenylserine 已生成 DL-threo-2-amino-1-p-nitrophen-nyl-1,3-propanediol 并进一步生成 D
L-氯霉素。(3) O-
甲基苯基丝氨酸的另一种非对映异构体 (mp 251–253°C) 已生成 DL-erythro-2-amino-1-p-nitrophenyl-l,3-propanediol hydrochloride。(4) O-
甲基苯基丝氨酸和O-
甲基苯基
丝氨醇的非对映异构体的几种衍
生物已被描述。