Studies in terpenoid biosynthesis. Part VII. The biosynthesis of helicobasidin
Abstract
Helicobasidin has been shown to incorporate four tritium atoms from [2,2-3H2]mevalonate, two from 4R-[4-3H]-mevalonate, and two from [5,5-3H2]mevalonate. Feeding with [2-3H,2-14C]geranyl pyrophosphate has shown that the 4R-mevalonoid tritium atom from the second prenyl unit is retained in the biosynthesis.