Berger M R, Floride J, Schreiber J, Schmähl D, Eisenbrand G
J Cancer Res Clin Oncol. 1984;108(1):148-53. doi: 10.1007/BF00390987.
Short-term treatment of N-methyl-N-nitrosourea-induced mammary carcinomas in Sprague-Dawley rats with estradiol-linked nitrosoureas shows that the compounds in which the cytotoxic group is linked to position 17 of estradiol are superior to the 3-ester analogue. Moreover, N-(2-chloroethyl)-N-nitroso-carbamoyl (CNC)-L-alanyl-L-alanine-estradiol-3-ester is more effective and less toxic than CNC-L-alanine-estradiol-3-ester, being equivalent to ovariectomy in its therapeutic efficacy. Unlinked CNC-amino acid or-dipeptide in admixture with estradiol is less effective. Linked compounds at therapeutic dosages display estrogenic activity.
用与雌二醇相连的亚硝基脲对斯普拉格-道利大鼠的N-甲基-N-亚硝基脲诱导的乳腺癌进行短期治疗,结果表明,细胞毒性基团与雌二醇17位相连的化合物优于3-酯类似物。此外,N-(2-氯乙基)-N-亚硝基氨基甲酰基(CNC)-L-丙氨酰-L-丙氨酸-雌二醇-3-酯比CNC-L-丙氨酸-雌二醇-3-酯更有效且毒性更小,其治疗效果与卵巢切除术相当。未相连的CNC-氨基酸或二肽与雌二醇混合使用效果较差。治疗剂量的相连化合物具有雌激素活性。