Studies on Organophosphorus Compounds XXVI. New Aspects on the Synthetic Study of Some Cyclic Esters of Alkylphosphonic Acids
作者:Chengye Yuan、Shusen Li、Zhiyi Cheng
DOI:10.1055/s-1988-27508
日期:——
Various methods for the synthesis of some cyclic esters of alkylphosphonic acids, namely 2-alkyl-1,3,2-dioxaphosphorinane-2-oxides and phosphepane-2-oxides were investigated. A dilution method based on the concurrent addition of alkylphosphonyl dichloride and glycol in the presence of triethylamine gave satisfactory results. Cyclic phosphonic ester with exocyclic bulky substituent on phosphorus was prepared with better yield by alcoholysis of tert-butyl phosphonyl dichloride with disodium glycolate. Phase transfer catalytic P-alkylation of cyclic phosphites proceeded smoothly in most cases. The dependence of ring size and structure of the exocyclic alkyl group on the spectroscopic behaviors of these compounds was evaluated.
Disclosed herein are nucleotide analogs, methods of synthesizing nucleotide analogs and methods of treating diseases and/or conditions such as a HBV and/or HDV and/or HIV infection with one or more nucleotide analogs
The present invention relates to dihydropyrrole compounds that are useful for treating cellular proliferative diseases, for treating disorders associated with KSP kinesin activity, and for inhibiting KSP kinesin. The invention is also related to compositions which comprise these compounds, and methods of using them to treat cancer in mammals.
The present invention relates to prodrugs of dihydropyrazole compounds that are useful for treating cellular proliferative diseases, for treating disorders associated with KSP kinesin activity, and for inhibiting KSP kinesin. The invention also related to compositions which comprise these compounds, and methods of using them to treat cancer in mammals.