Structural and spectral assignment of three forskolin‐like diterpenoids isolated from  Plectranthus ornatus | Zendy

Rijo Patrícia | Zendy; Fátima Simões M. | Zendy; Rodríguez Benjamín | Zendy

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Structural and spectral assignment of three forskolin‐like diterpenoids isolated from Plectranthus ornatus

Author(s) -

Rijo Patrícia,

Fátima Simões M.,

Rodríguez Benjamín

Publication year - 2005

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.1600

Subject(s) - chemistry , labdane , forskolin , stereochemistry , diterpene , acetone , two dimensional nuclear magnetic resonance spectroscopy , carbon 13 nmr , proton nmr , organic chemistry , biochemistry , receptor

Three labdane diterpenoids were isolated from an acetone extract of Plectranthus ornatus . Their structures, closely related to that of forskolin, were determined by NMR studies. Unambiguous and complete assignments of the 1 H and 13 C NMR chemical shifts for these substances are presented. The assignments are based on 2D shift‐correlated [ 1 H, 1 H‐COSY, 1 H, 13 C‐gHSQC‐ 1 J (C,H), 1 H, 13 C‐gHMBC‐ n J (C,H) ( n = 2 and 3)] and NOE experiments. Copyright © 2005 John Wiley & Sons, Ltd.

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