The invention comprises a novel process for the preparation of an epothilone derivative of formula I:
wherein R
1
and R
2
independently from each other represent hydrogen or protecting groups and R
3
is methyl or trifluoromethyl, which are useful precursors in the synthesis of the desoxyepothilone derivatives of the formula IV:
wherein R
3
is methyl or trifluoromethyl. The desoxepothilones of formula IV inhibit the growth of tumor cells and are therefore promising candidates for novel anticancer agents.
该发明涉及一种新型工艺,用于制备式I的
环丙沙星衍
生物,其中R1和R2各自独立地表示氢或保护基,R3为甲基或三
氟甲基,这些衍
生物在合成式IV的去氧
环丙沙星衍
生物的前体中有用,其中R3为甲基或三
氟甲基。式IV的去氧
环丙沙星具有抑制肿瘤细胞生长的作用,因此是新型抗癌药物的有前途的候选药物。