作者:Guillermo S. Cortez、Reginald L. Tennyson、Daniel Romo
DOI:10.1021/ja016134+
日期:2001.8.1
Nucleophilic openings of bicyclic β-lactones via acyl C–O and alkyl C–O cleavage: catalytic, asymmetric synthesis of a versatile, carbocyclic nucleoside precursor and protected transpentacin
作者:Yasuno Yokota、Guillermo S Cortez、Daniel Romo
DOI:10.1016/s0040-4020(02)00703-2
日期:2002.8
recently developed in our laboratory. These bicyclic β-lactones undergo facile ring cleavage under mild conditions via both acyl C–O and alkyl C–O bond cleavage. Cleavage of the acyl C–O bond with hydroxylamine nucleophiles proceeds at ambient temperature and reductive cleavage is readily accomplished with aluminum and boron reducing agents. Alternatively, alkyl C–O cleavage with various nucleophiles leads