An unusual double 4σ-bond long-range coupling in 3α-methyl-5α-androst-1-ene 3β,19-oxide
Abstract
The n.m.r. examination of 3α-methyl-5α-androst-1-ene 3β,19-oxide (2) revealed simultaneous long-range coupling by the two nonequivalent protons of the C-19 methylene group.