申请人:——
公开号:US20040087813A1
公开(公告)日:2004-05-06
This invention pertains to novel methods for the synthesis of certain nitrogen mustard prodrugs, such as N-[4-[N,N-bis(2-haloethylamino)-phenoxycarbonyl]-L-glutamic acid: wherein: X
2
is a halo group, and is —F, —Cl, —Br, or —I; n is an integer from 0 to 4; and, each R
A
is an aryl substituent. The methods comprise, at least, the steps of: glutamate conjugation (GC); silyloxy deprotection (SD); and, sulfonic esterification (SU). Certain preferred methods comprise the steps of: amine substitution (AS); silyloxy protection (SP); phenolic deprotection (PD); activation (AC); glutamate conjugation (GC); silyloxy deprotection (SD); sulfonic esterification (SU); halogenation (HL); glutamate deprotection (GD); and glutamic acid protection (GP).
1
这项发明涉及一种用于合成某些氮芥前药的新方法,例如N-[4-N,N-双(2-卤乙基氨基)-苯氧羰基]-L-谷氨酸:其中:X2是卤素基团,为—F、—Cl、—Br或—I;n是从0到4的整数;每个RA是芳基取代物。该方法至少包括以下步骤:谷氨酸共轭(GC);硅氧脱保护(SD);磺酸酯化(SU)。某些优选方法包括以下步骤:胺取代(AS);硅氧保护(SP);酚脱保护(PD);活化(AC);谷氨酸共轭(GC);硅氧脱保护(SD);磺酸酯化(SU);卤代(HL);谷氨酸脱保护(GD);和谷氨酸保护(GP)。