PROCESS FOR PREPARING MONOSODIUM SALTS OF 1-BETA-D-ARABINOFURANOZYLCYTOZINE-5'-STEARYL PHOSPHATE AND THE MONOHYDRATE OF THIS SALT

摘要

Disclosed herein are a novel process for producing 1- beta -D-arabinofuranosylcytosine-5'-stearylphosphate a monosodium salt, which has been expected as an oral antitumor agent, and 1- beta -D-arabinofranosylcytosine-5'-stearylphosphate monosodium salt monohydrate obtained from the above-mentioned monosodium salt. The invention also comprises a pharmaceutical composition containing the mentioned monohydrate and the use thereof as a medicament, preferably in treating tumor.