3'-O-TOSYLCYTIDINE AND CYTOSINE COMPOUNDS, AND PROCESS FOR PRODUCTION THEREOF

摘要

Compounds of Formula IV: (IV) are described. In the compounds of Formula IV, R6 is selected from a trifluoromethyl group, a C1-C6 alkyl group and a C6-C9 aryl group, and R1 is selected from hydrogen, trityl, methoxytrityl, dimethoxytrityl, acetyl, a C2-C6 alkylacyl group, a C6-C9 arylacyl group, allyl, 2,2,2-trichloroethyl, phosphates and salts thereof, tosyl and mesyl. The above organosulfonyl salts of 2,3'-O-cyclocytidine are intermediates in the preparation of 1-(B-D-xylopentofuranose)cytosine, an inhibitor of DNA synthesis.