申请人:Ohara Pharmaceutical Co., Ltd.
公开号:EP3252067A1
公开(公告)日:2017-12-06
The present invention relates to a prodrug of 5-azacytidine or 2'-deoxy-5-azacytidine having remarkable stability against cytidine deaminase, a metabolic hydrolyzing enzyme in replacement of current injections (5-azacytidine or 2'-deoxy-5-azacytidine) which are clinically used as therapeutic agents for various myelomas including myelodysplastic syndrome.
The present invention provides a compound represented by formula (1), or salt thereof,
wherein, R is OR3 or a hydrogen atom, R1, R2, and R3 are each independently hydrogen atom or silyl group represented by formula (2):
wherein, R4, R5, and R6 are each independently alkyl group which may have a substituent, aryl group which may have a substituent, or arylalkyl group which may have a substituent, with the provision that R1, R2, and R3 are not hydrogen atom simultaneously.
本发明涉及一种5-氮杂胞苷或2'-脱氧-5-氮杂胞苷的原药,它对胞苷脱氨酶(一种代谢水解酶)具有显著的稳定性,可替代目前的注射剂(5-氮杂胞苷或2'-脱氧-5-氮杂胞苷),后者在临床上用作包括骨髓增生异常综合征在内的各种骨髓瘤的治疗药物。
本发明提供了一种由式(1)代表的化合物或其盐、
其中,R是OR3或氢原子,R1、R2和R3各自独立地是氢原子或由式(2)代表的硅烷基:
其中,R4、R5 和 R6 各自独立地为可具有取代基的烷基、可具有取代基的芳基或可具有取代基的芳烷基,但 R1、R2 和 R3 不能同时为氢原子。