NUCLEOSIDES AND NUCLEOTIDES .155. SYNTHESIS, ANTITUMOR EFFECTS, AND POSSIBLE ENZYMATIC ACTIVATION MECHANISM OF 5'-PHOSPHATIDYL-2'-DEOXY-2'-METHYLENECYTIDINE (DMDC)
S. Shuto et al., NUCLEOSIDES AND NUCLEOTIDES .155. SYNTHESIS, ANTITUMOR EFFECTS, AND POSSIBLE ENZYMATIC ACTIVATION MECHANISM OF 5'-PHOSPHATIDYL-2'-DEOXY-2'-METHYLENECYTIDINE (DMDC), Bioorganic & medicinal chemistry letters, 6(18), 1996, pp. 2177-2182
2'-Deoxy-2'-methylenecytidine (DMDC, 1) and its 5-fluoro congener (5-F
-DMDC, 2), potent antitumor nucleosides developed by us, were efficien
tly converted to their 5'-phosphatidyl derivatives bearing palmitoyl r
esidues (3 and 4, respectively) as novel antitumor phospholipids by ph
ospholipase D-catalyzed trans-phosphatidylation. These phospholipids 3
and 4, administered i.p., remarkably prolonged the life-span of mice
which were i.p.-inoculated with M5076 sarcoma, and the effects were cl
early superior to that of DMDC. Compound 3 was a good substrate for ph
ospholipase A(2) from bovine pancreas as well as phospholipase D from
Streptomyces, while it was slightly hydrolyzed by phospholipase C from
Bacillus cereus. Copyright (C) 1996 Elsevier Science Ltd