Sorption properties of 1- and 3-substituted indoles containing a P(III) atom were estimated by gas chromatography. The sorption properties were shown to depend on the nature of substituents on the phosphorus atom.
Indolyl-oxazaphosphorine Precursors for Stereoselective Synthesis of Phosphite Triesters and Dithymidinyl Phosphorothioates
作者:Jian-Chao Wang、George Just
DOI:10.1021/jo990242l
日期:1999.10.1
7 were synthesized, and their potential as precursors to chiral phosphorothioates was evaluated. Reaction of 7 with a thymidine derivative gave phosphitetriester 8 with a large degree of stereoselectivity. Sulfurization with Beaucage's reagent provided phosphorothioate triesters 9. The chiral auxiliary 9b containing a cyano group could be easily removed with aqueous ammonia to form dithymidinyl phosphorothioate