Syntheses and evaluation as antifolates of MTX analogs derived from 2,.omega.-diaminoalkanoic acids
作者:J. R. Piper、G. S. McCaleb、J. A. Montgomery、F. A. Schmid、F. M. Sirotnak
DOI:10.1021/jm00146a008
日期:1985.8
(MTX) analogues 27a-c bearing 2, omega-diaminoalkanoic acids (ornithine and its two lower homologues) in place of glutamic acid were synthesized by routes proceeding through N2-[4-(methylamino)benzoyl]-N omega-[(1,1-dimethylethoxy)carbonyl]-2, omega-diaminoalkanoic acid ethyl esters and N2-[4-(methylamino)benzoyl]-N5-[(1,1-dimethylethoxy)carbonyl]-2, 5-diaminopentanoic acid followed by alkylation with
通过N2- [4-(甲基氨基)苯甲酰基]-N-ω-[[(+] []]合成带有2的ω-二氨基链烷酸(鸟氨酸及其两个较低的同系物)的甲氨蝶呤(MTX)类似物27a-c 1,1-二甲基乙氧基)羰基] -2,ω-二氨基链烷酸乙酯和N2- [4-(甲基氨基)苯甲酰基] -N5-[(1,1-二甲基乙氧基)羰基] -2,5-二氨基戊酸用6-(溴甲基)-2,4-吡啶二胺氢溴酸盐进行烷基化。27型类似物或适当前体的末端氨基上的反应导致其他MTX衍生物的侧链终止于脲基,甲基脲基,N-甲基-N-亚硝基脲基,N-(2-氯乙基)-N-亚硝基脲基和4-氯苯甲酰胺基。还制备了通过将异氰酸根合乙酸乙酯和2-异氰酸根合戊二酸二乙酯加入27a,b的乙基酯中而形成的不对称的二取代脲基。在这些脲基加合物(分别为32a,b和33a,b)中,只有33a成功水解为相应的纯酸,在这种情况下为三羧酸34(MTX代谢物MTX-γ-Glu的假