2'-ALKYLIDENEPYRIMIDINE NUCLEOSIDE DERIVATIVES, PROCESS FOR THEIR PREPARATION, AND THEIR USE
申请人:Yamasa Shoyu Kabushiki Kaisha
公开号:EP0310673A1
公开(公告)日:1989-04-12
Novel 2'-alkylidenepyrimidine nucleoside derivatives represented by formula (I)
or salts thereof are disclosed, wherein R1 represents an amino group or a hydroxy group, R2 represents a hydrogen atom, a halogen atom or a lower alkyl group, R3 represents a hydrogen atom or a lower alkyl group, and R4 represents a hydrogen atom or a phosphoric acid residue. These novel compounds may be prepared by using a uridine or cytidine derivative as the starting material and introducing an alkylidene group into the 2'-position of the sugar moiety with a Wittig reagent. These compounds have an excellent antiviral effect, thus providing novel antiviral drugs.
Pyrimidine 2′-deoxy-2′-methylidene nucleoside compounds :
wherein R¹ represents amino, hydroxy, silylamino, silyloxy, acylamino or acyloxy; R² represents hydrogen, halogen, a lower alkyl, a lower alkenyl, a lower alkynyl or haloalkyl; R³ and R⁴ represent the same or different hydrogen, silyl, acyl or aminoacyl, or a pharmaceutically acceptable salt or hydrate thereof, except that R¹ is amino or hydroxy, and both of R³ and R⁴ are hydrogen.
Said compounds possess excellent antitumor and antiviral activities, thus providing novel anticancer and antiviral agent.