Ethyl ent-15α-[(2-meth-oxy-benz-yloxy)meth-yl]-16-oxobeyeran-20-oate.

ABSTRACT

The title compound, C(31)H(44)O(5), was synthesized from isostev-iol (systematic name ent-16-ketobeyeran-19-oic acid). In the mol-ecule, the three six-membered rings adopt chair conformations and the stereochemistry of the A/B and B/C ring junctions are trans. The five-membered ring D adopts an envelope conformation with the methyl-ene C atom as the flap.