Methotrexate analogs. 26. Inhibition of dihydrofolate reductase and folylpolyglutamate synthetase activity and in vitro tumor cell growth by methotrexate and aminopterin analogs containing a basic amino acid side chain
作者:Andre Rosowsky、James H. Freisheim、Richard G. Moran、Vishnu C. Solan、Henry Bader、Joel E. Wright、Mary Radike-Smith
DOI:10.1021/jm00155a012
日期:1986.5
Analogues of the antitumor antifolate methotrexate (MTX) were synthesized in which the glutamate (Glu) moiety was replaced by ornithine (Orn), 2,4-diaminobutyric acid (Dab), or 2,3-diaminopropionic acid (Dap). An aminopterin (AMT) analogue with Orn in place of Glu was also synthesized. The MTX analogues were obtained by reaction of 4-amino-4-deoxy-N10-methylpteroic acid (mAPA) and N omega-Boc-alpha
合成了抗肿瘤抗叶酸甲氨蝶呤(MTX)的类似物,其中谷氨酸(Glu)部分被鸟氨酸(Orn),2,4-二氨基丁酸(Dab)或2,3-二氨基丙酸(Dap)代替。还合成了以Orn代替Glu的氨基蝶呤(AMT)类似物。MTX类似物是通过在氨基氰基磷酸二乙酯存在下,使4-氨基-4-脱氧-N10-甲基蝶酸(mAPA)与N-ω-Boc-α,ω-二氨基链烷酸反应,然后用三氟乙酸(TFA)脱保护而获得的。 )或通过对硝基苯基-mAPA与Nω-Boc-α,ω-二氨基链烷酸反应并随后用TFA处理。AMT类似物(APA-Orn)是通过在55°C下于55°C下使对硝基苯基4-氨基-4-脱氧-N10-甲酰基蝶酸酯与甲硅烷基化的Nδ-Boc-L-鸟氨酸反应3天(产率为45%) ),皂化(83%)和TFA裂解(89%)。APA-Orn是来自L1210小鼠白血病的二氢叶酸还原酶(DHFR)(IC50 = 0.072 micr