13C NMR Spectra of some D:A-friedo-oleananes

A. A. Leslie Gunatilaka; N. Dhammika Nanayakkara; Mohammed I.M. Wazeer

doi:10.1016/0031-9422(83)85038-9

¹³C NMR Spectra of some D:A-friedo-oleananes

A. A. Leslie Gunatilaka^*
, N. Dhammika Nanayakkara
, Mohammed I.M. Wazeer

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

The ¹³C NMR signals of D:A-friedo-olean-7-one, putranjivadione, D:A-friedo-olean-22-one, D:A-friedo-olean-3,22-dione, and Salacia triterpene R have been assigned using off-resonance decoupling and lanthanide induced shift techniques. ¹³C NMR data provide further evidence for the boat-boat conformation for the D and E rings of D:A-friedo-oleananes in solution.

Original language	English
Pages (from-to)	991-992
Number of pages	2
Journal	Phytochemistry
Volume	22
Issue number	4
DOIs	https://doi.org/10.1016/0031-9422(83)85038-9
State	Published - 1983

Bibliographical note

Funding Information:
Acknowledgements~The ‘-‘C NMR spectra were recorded at the Department of Chemistry. Bristol University, U.K., and we are grateful to Dr. M. Murray for providing the facilities. We thank Drs. P. Sengupta and B. S. Joshi for authentic samples of putranJivadione and Sultrcia triterpene R, respectively,a nd Mrs. S. C. Weerasekera for typing the manuscript. This work was supported in part by the International Foundation for Science (Sweden) and the National Science Council (Sri Lanka).

Keywords

C NMR analysis
D:A-Friedo-oleananes
D:A-friedo-olean-22-one
D:A-friedo-olean-3,22-dione
D:A-friedo-olean-7-one
Salacia triterpene R
friedelin
putranjivadione

ASJC Scopus subject areas

Biochemistry
Molecular Biology
Plant Science
Horticulture

Access to Document

10.1016/0031-9422(83)85038-9

Cite this

@article{e0cdf945472a4e9c9a122596543ff44e,

title = "13C NMR Spectra of some D:A-friedo-oleananes",

abstract = "The 13C NMR signals of D:A-friedo-olean-7-one, putranjivadione, D:A-friedo-olean-22-one, D:A-friedo-olean-3,22-dione, and Salacia triterpene R have been assigned using off-resonance decoupling and lanthanide induced shift techniques. 13C NMR data provide further evidence for the boat-boat conformation for the D and E rings of D:A-friedo-oleananes in solution.",

keywords = "C NMR analysis, D:A-Friedo-oleananes, D:A-friedo-olean-22-one, D:A-friedo-olean-3,22-dione, D:A-friedo-olean-7-one, Salacia triterpene R, friedelin, putranjivadione",

author = "\{Leslie Gunatilaka\}, \{A. A.\} and \{Dhammika Nanayakkara\}, N. and Wazeer, \{Mohammed I.M.\}",

note = "Funding Information: Acknowledgements\textasciitilde{}The {\textquoteleft}-{\textquoteleft}C NMR spectra were recorded at the Department of Chemistry. Bristol University, U.K., and we are grateful to Dr. M. Murray for providing the facilities. We thank Drs. P. Sengupta and B. S. Joshi for authentic samples of putranJivadione and Sultrcia triterpene R, respectively,a nd Mrs. S. C. Weerasekera for typing the manuscript. This work was supported in part by the International Foundation for Science (Sweden) and the National Science Council (Sri Lanka).",

year = "1983",

doi = "10.1016/0031-9422(83)85038-9",

language = "English",

volume = "22",

pages = "991--992",

journal = "Phytochemistry",

issn = "0031-9422",

publisher = "Elsevier Ltd.",

number = "4",

}

TY - JOUR

T1 - 13C NMR Spectra of some D:A-friedo-oleananes

AU - Leslie Gunatilaka, A. A.

AU - Dhammika Nanayakkara, N.

AU - Wazeer, Mohammed I.M.

N1 - Funding Information: Acknowledgements~The ‘-‘C NMR spectra were recorded at the Department of Chemistry. Bristol University, U.K., and we are grateful to Dr. M. Murray for providing the facilities. We thank Drs. P. Sengupta and B. S. Joshi for authentic samples of putranJivadione and Sultrcia triterpene R, respectively,a nd Mrs. S. C. Weerasekera for typing the manuscript. This work was supported in part by the International Foundation for Science (Sweden) and the National Science Council (Sri Lanka).

PY - 1983

Y1 - 1983

N2 - The 13C NMR signals of D:A-friedo-olean-7-one, putranjivadione, D:A-friedo-olean-22-one, D:A-friedo-olean-3,22-dione, and Salacia triterpene R have been assigned using off-resonance decoupling and lanthanide induced shift techniques. 13C NMR data provide further evidence for the boat-boat conformation for the D and E rings of D:A-friedo-oleananes in solution.

AB - The 13C NMR signals of D:A-friedo-olean-7-one, putranjivadione, D:A-friedo-olean-22-one, D:A-friedo-olean-3,22-dione, and Salacia triterpene R have been assigned using off-resonance decoupling and lanthanide induced shift techniques. 13C NMR data provide further evidence for the boat-boat conformation for the D and E rings of D:A-friedo-oleananes in solution.

KW - C NMR analysis

KW - D:A-Friedo-oleananes

KW - D:A-friedo-olean-22-one

KW - D:A-friedo-olean-3,22-dione

KW - D:A-friedo-olean-7-one

KW - Salacia triterpene R

KW - friedelin

KW - putranjivadione

UR - https://www.scopus.com/pages/publications/0037757065

U2 - 10.1016/0031-9422(83)85038-9

DO - 10.1016/0031-9422(83)85038-9

M3 - Article

AN - SCOPUS:0037757065

SN - 0031-9422

VL - 22

SP - 991

EP - 992

JO - Phytochemistry

JF - Phytochemistry

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