Substitution of the methyl groups with ethyl groups at C-10 and C-15 of 2,3-oxidosqualene halts the enzymatic reaction of oxidosqualene–lanosterol cyclase at the monocyclic ring stage
Abstract
Incubation of the substrate analogue, (3S)-(E,E,E,E,E)-10,15-diethyl-2,6,19,23-tetramethyl-2,3-epoxytetracosa-6,10,14,18,22-pentaene (–)-1, with 2,3-oxidosqualene–lanosterol cyclase from pigs liver gave unprecedented cyclization products 2 and 3 having a monocyclic skeleton.