A Novel 3α-p-nitrobenzoylmultiflora-7:9(11)-diene-29-benzoate and two new triterpenoids from the seeds of zucchini (Cucurbita pepo L)

Abstract

Three novel multiflorane-type triterpenoids, 3α-p- nitrobenzoylmultiflora- 7:9(11)-diene-29-benzoate (1), 3α- acetoxymultiflora-7:9(11)-diene-29-benzoate (2), and 3α-acetoxymultiflora- 5(6):7:9(11)-triene-29-benzoate (3), along with two known related compounds 4 and 5 were isolated from the seeds of zucchini (Cucurbita pepo L). Their structures were determined on the basis of 1D and 2D NMR spectroscopy and HREIMS. Triterpenoids possessing a nitro group were not isolated previously. © 2013 by the authors.