Studies on the Constituents of Orchidaceous Plants. IV. : Proton and Carbon-13 Signal Assignments of Cycloeucalenol-Type Triterpenes from Nervilia purpurea SCHLECHTER by Two-Dimensional Nuclear Magnetic Resonance Spectroscopy

TOHRU KIKUCHI; SHIGETOSHI KADOTA; KOJI TSUBONO

doi:10.1248/cpb.34.2479

Chemical and Pharmaceutical Bulletin

Online ISSN : 1347-5223
Print ISSN : 0009-2363

Studies on the Constituents of Orchidaceous Plants. IV. : Proton and Carbon-13 Signal Assignments of Cycloeucalenol-Type Triterpenes from Nervilia purpurea SCHLECHTER by Two-Dimensional Nuclear Magnetic Resonance Spectroscopy

TOHRU KIKUCHI, SHIGETOSHI KADOTA, KOJI TSUBONO

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Keywords: ^1H-¹³C shift-correlated NMR

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Volume 34 (1986) Issue 6 Pages 2479-2486

DOI https://doi.org/10.1248/cpb.34.2479

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Abstract

The proton and carbon-13 nuclear magnetic resonance (NMR) signals of cycloeucalenol (1a), cycloeucalenol acetate (1b), cyclonervilol (2a), cyclonervilol acetate (2b), and cyclohomonervilol acetate (3b), isolated from Nervilia purpurea, were assigned by means of two-dimensional NMR spectroscopy.

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