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Molecules 2013, 18(7), 7448-7459; doi:10.3390/molecules18077448
Article

A Novel 3a-p-Nitrobenzoylmultiflora-7:9(11)-diene-29-benzoate and Two New Triterpenoids from the Seeds of Zucchini (Cucurbita pepo L)

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Received: 6 June 2013 / Revised: 21 June 2013 / Accepted: 21 June 2013 / Published: 26 June 2013
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Abstract

Three novel multiflorane-type triterpenoids, 3a-p-nitrobenzoylmultiflora-7:9(11)-diene-29-benzoate (1), 3a-acetoxymultiflora-7:9(11)-diene-29-benzoate (2), and 3a-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.
Keywords: Cucurbita pepo L; zucchini; 3a-p-nitrobenzoylmultiflora-7:9(11)-dien-29-benzoate; 3a-acetoxymultiflora-7:9(11)-diene-29-benzoate; 3a-acetoxymultiflora-5(6):7:9 (11)-triene-29-benzoate Cucurbita pepo L; zucchini; 3a-p-nitrobenzoylmultiflora-7:9(11)-dien-29-benzoate; 3a-acetoxymultiflora-7:9(11)-diene-29-benzoate; 3a-acetoxymultiflora-5(6):7:9 (11)-triene-29-benzoate
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Tanaka, R.; Kikuchi, T.; Nakasuji, S.; Ue, Y.; Shuto, D.; Igarashi, K.; Okada, R.; Yamada, T. A Novel 3a-p-Nitrobenzoylmultiflora-7:9(11)-diene-29-benzoate and Two New Triterpenoids from the Seeds of Zucchini (Cucurbita pepo L). Molecules 2013, 18, 7448-7459.

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