Conformational Studies. I. Nuclear Magnetic Resonance Analysis on Conformation of 10β-and 10α-Oxy-enantio-deoxypodocarpic Acid Type Isomer.

Abstract

The configuration and conformation of 10β- and 10α-enantio-deoxypodocarpic acid type isomer and the corresponding lactone were discussed by their NMR spectrum analysis. The analysis was performed especially on the ABX type proton system as observed between 9-methylene protons and 10-proton.