Disclosed is a dihydropyrimido fused ring derivative as a HBV inhibitor, and in particular relates to a compound shown as formula (I) or a pharmaceutically acceptable salt thereof.
REACTION OF SULFENAMIDES WITH DI-ALKYL AND TRIALKYL PHOSPHITES.AN EFFICIENT SYNTHESIS OF PHOSPHORAMIDATES BY UNUSUAL SUBSTITUTION AT S–N BOND IN (2-BENZOTHIAZOLYL)SULFENAMIDES
作者:Sigeru Torii、Noboru Sayo、Hideo Tanaka
DOI:10.1246/cl.1980.695
日期:1980.6.5
Regioselective attack of the trivalent phosphorus atom of dialkyl and trialkyl phosphites on either nitrogen or sulfur atom of sulfenamides has been found. The reaction of phenylsulfenamides with dialkyl phosphites yielded phosphorothiolates, whereas the treatment of (2-benzothiazolyl)sulfenamides with dialkyl and trialkyl phosphites gave phosphoramidates in excellent yields.
Methoxide-induced rearrangement of some N-t-butyl α-chlorophosphonamidates evidence for azaphosphiridine oxide intermediates
作者:Martin J.P Harger、Andrew Williams
DOI:10.1016/s0040-4039(00)84517-7
日期:——
-t-Butyl α-chlorophosphonamidates () undergo methoxide-induced rearrangement to give products ( and ) in which either the P-N or PC bond has been broken. This implies the intermediacy of a cyclic azaphosphiridine oxide .