The invention concerns the preparation of nothapodytine or camptothecin derivatives which consists in causing 4-ethyl 2methyl hepta-2,4-dienoic acid act on a 3-aminomethyl 2-bromo quinoline derivative (III) wherein R1 and R2 are H or R1 is a halogen atom or alkyl, R2 is a O—CO—X radical as defined for the camptothecin derivatives; or R1 and R2 are defined for the known camptothecin derivatives or represent protected radicals or radicals easily convertible into the radicals R1 and R2, to obtain the quinoline derivative (IV); adding to the resulting quinoline derivative (2-methoxy carbonyl vinyl) tributyltin in the presence of a complex of palladium and triphenylarsin to obtain the quinoline derivative (V); cyclizing the resulting quinoline derivative to obtain the tetracyclic derivative (VI); then in subjecting said derivative to an ozonolysis followed by treatment with dimethyl sulphide to obtain the tetracyclic derivative (VII); saponification followed by decarboxylation in oxidising conditions of the resulting tetracyclic derivative to obtain the nothopodytine derivative (VIII); then optionally transforming the resulting derivative into a camptothecin derivative or into a mappicine derivative.
本发明涉及制备诺他泊定或
喜树碱衍
生物的方法,其包括使4-乙基2-甲基庚-2,4-二烯酸作用于3-
氨基甲基
2-溴喹啉衍
生物(III),其中R1和R2为H或R1为卤素原子或烷基,R2为定义为
喜树碱衍
生物的O—CO—X基团; 或R1和R2被定义为已知的
喜树碱衍
生物,或代表受保护的基团或易于转化为基团R1和R2的基团,以获得
喹啉衍
生物(IV); 在
钯和三苯基胂的复合物存在下,向所得
喹啉衍
生物中加入(2-甲氧羰基
乙烯基)三
丁基锡,以获得
喹啉衍
生物(V); 环化所得
喹啉衍
生物,以获得四环衍
生物(VI); 然后将该衍
生物经
臭氧化反应后,用
二甲基硫处理,以获得四环衍
生物(VII); 对所得四环衍
生物进行皂化,随后在氧化条件下脱羧,以获得诺他泊定衍
生物(VIII); 然后可选地将所得衍
生物转化为
喜树碱衍
生物或马皮西因衍
生物。