Regiocontrol in nucleophilic ring opening of chiral epoxides of chemoenzymatic origin
作者:Giuseppe Guanti、Valeria Merlo、Enrica Narisano
DOI:10.1016/s0040-4020(01)89574-0
日期:1994.1
Homochiral cis epoxides derived from enzymatically asymmetrized tris(hydroxymethyl)methane equivalents (THYM*) are regioselectively opened by carbon based-nucleophiles (alkyl groups or cyanides) and halides in the presence of Lewis acids. Enantio- and diastereodivergent synthesis of branched triols is reported.
Guanti Giuseppe, Banfi Luca, Merlo Valeria, Narisano Enrica, Tetrahedron, 50 (1994) N 7, S 2219-2230
Homochiral cis epoxides derived from asymmetrized 2-alkenyl-1,3-propanediols are efficiently opened by a variety of hydride donors in the presence of Lewis acids to differently protected triols with a regioselectivity up to 99 : 1.