Synthesis of enantiopure 1,2-azido and 1,2-amino alcohols via regio- and stereoselective ring-opening of enantiopure epoxides by sodium azide in hot water
作者:Hai-Yang Wang、Kun Huang、Melvin De Jesús、Sandraliz Espinosa、Luis E. Piñero-Santiago、Charles L. Barnes、Margarita Ortiz-Marciales
DOI:10.1016/j.tetasy.2015.12.002
日期:2016.2
A practical and convenient method for the efficient and regio- and stereoselective ring-opening of enantiopure monosubstituted epoxides by sodium azide under hydrolytic conditions is reported. The ring-opening of enantiopure styryl and pyridyl (S)-epoxides by N3 - in hot water takes place preferentially at the internal position with complete inversion of configuration to produce (R)-2-azido ethanols
The present invention provides novel heterocyclic compounds of Formula I wherein A, B, E, ring Z, Y, L, ring X, D, m, n, R7 and R8 are as defined in the specification as estrogen receptor antagonists/degraders. The compound of Formula I can be used for the treatment of cancers mediated by estrogen receptors. (Formula I ).