260369-33-3Relevant academic research and scientific papers
Trimethylsilyltriflate-promoted addition of 2-trimethylsilyloxyfuran to a chiral cyclic nitrone; a short synthesis of [1S(1α,2β,7β,8α,8aα)]-1,2- di(t-butyldiphenylsilyloxy)-indolizidine-7,8-diol
Lombardo, Marco,Trombini, Claudio
, p. 323 - 326 (2000)
The trimethylsilyl triflate promoted addition of 2- trimethylsilyloxyfuran to (3S,4S)-3,4-dihydro-3,4-di(t- butyldiphenylsilyloxy)2H-pyrrole 1-oxide, derived from (R,R)-tartaric acid, displays complete facial selectivity, affording two diastereomeric butenolides in excellent overall yield. The major adduct undergoes silica-gel induced ring-closure to give in almost quantitative yield [4S(4α,5β,5aβ,5bα,8aα)]-hexahydro-4,5-di(t-butyldiphenylsilyloxy)- pyrrolo [1,2-b]furo[2,3d] isoxazol-7(3H)one; reduction with DIBAH followed by hydrogenolysis on Pd(OH)2/C affords the partially protected 1,2,7,8- indolizidinetetrol.
