摘要:
This invention relates to a process for the production of 2-fluoropurine derivatives from 2-aminopurine derivatives, which are reacted in HF/pyridine or HF/pyridine/H.sub.2 O in the presence of a nitrite.
摘要翻译:本发明涉及一种由2-氨基嘌呤衍生物生产2-氟嘌呤衍生物的方法,其在亚硝酸盐存在下在HF /吡啶或HF /吡啶/ H 2 O中反应。
摘要:
A process for the production of fludarabine or fludarabine phosphate is provided, wherein the nucleoside guanosine or a suitable derivative is employed as the starting material. The guanosine starting material is subjected to (a) conversion of the 6-keto group into a 6-amino group, (b) conversion of the 2-amino group to a 2-fluoro group, and (c) conversion of the ribofuranosyl moiety to an arabinofuranosyl moiety. Steps (a), (b), and (c) can be performed individually or concomitantly and in any sequence.
摘要:
A process for the production of fludarabine or fludarabine phosphate is provided, wherein the nucleoside guanosine or a suitable derivative is employed as the starting material. The guanosine starting material is subjected to (a) conversion of the 6-keto group into a 6-amino group, (b) conversion of the 2-amino group to a 2-fluoro group, and (c) conversion of the ribofuranosyl moiety to an arabinofuranosyl moiety. Steps (a), (b), and (c) can be performed individually or concomitantly and in any sequence.
摘要:
This invention pertains to novel methods of synthesizing fludarabine, fludarabine phosphate and related nucleoside pharmacologic agents utilizing 6-azido-2-fluoropurine as a novel intermediate.In particular this invention pertains to a synthesis of fludarabine where the relatively low yield fluorination step is done before the costly coupling step.