Two phenolic friedo-23,24-dinoroleanane triterpenes from Kokoona zeylanica

Chandra B. Gamlath; A. A.Leslie Gunatilaka

doi:10.1016/0031-9422(88)80030-X

Two phenolic friedo-23,24-dinoroleanane triterpenes from Kokoona zeylanica

Chandra B. Gamlath, A. A.Leslie Gunatilaka

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

13 Scopus citations

Abstract

Two novel phenolic dinor-triterpenes isolated from Kokoona zeylanica have been identified as 23-nor-6-oxopristimerol and 23-nor-6-oxodemethylpristimerol on the basis of spectroscopic evidence and chemical interconversions. The biosynthetic significance of the co-occurrence of phenolic D:A-friedo-23, 24-dinoroleananes with phenolic and quinone-methide triterpenes in K. zeylanica is discussed.

Original language	English (US)
Pages (from-to)	3221-3224
Number of pages	4
Journal	Phytochemistry
Volume	27
Issue number	10
DOIs	https://doi.org/10.1016/0031-9422(88)80030-X
State	Published - 1988
Externally published	Yes

Keywords

23-nor-6-oxodemethylpristimerol
23-nor-6-oxopristimerol
Celastraceae
Kokoona zeylanica
biosynthesis.
demethylzeylasteral
phenolic D:A-friedo-23,24-dinoroleananes
structure elucidation

ASJC Scopus subject areas

Biochemistry
Molecular Biology
Plant Science
Horticulture

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10.1016/0031-9422(88)80030-X

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title = "Two phenolic friedo-23,24-dinoroleanane triterpenes from Kokoona zeylanica",

abstract = "Two novel phenolic dinor-triterpenes isolated from Kokoona zeylanica have been identified as 23-nor-6-oxopristimerol and 23-nor-6-oxodemethylpristimerol on the basis of spectroscopic evidence and chemical interconversions. The biosynthetic significance of the co-occurrence of phenolic D:A-friedo-23, 24-dinoroleananes with phenolic and quinone-methide triterpenes in K. zeylanica is discussed.",

keywords = "23-nor-6-oxodemethylpristimerol, 23-nor-6-oxopristimerol, Celastraceae, Kokoona zeylanica, biosynthesis., demethylzeylasteral, phenolic D:A-friedo-23,24-dinoroleananes, structure elucidation",

author = "Gamlath, {Chandra B.} and Gunatilaka, {A. A.Leslie}",

note = "Funding Information: Acknowledgements-We thank Prof. Atta-ur-Rahman (H. E. J. Research Institute of Chemistry, University of Karachi, Pakistan) and Prof. T. Kikuchi (Toyama Medical and Pharmaceutical University, Toyama, Japan) for MS data: Miss Stina-britt Nilsson (Bio-Carb AB, Lund, Sweden),f or {\textquoteleft}H NMR (500 MHz). “C NMR and FAB MS data; Prof. S. Balasubramaniam for identification of plant material; MS V. B. Ratnayake, P. Leanage and P. Rajanathan for technical assistance; Mrs S. C. Weerasekera for typing the manuscript; International Foundation for Science (Sweden)a nd Natural Resources, Energy and Science Authority (Sri Lanka) for financial assistance.",

year = "1988",

doi = "10.1016/0031-9422(88)80030-X",

language = "English (US)",

volume = "27",

pages = "3221--3224",

journal = "Phytochemistry",

issn = "0031-9422",

publisher = "Elsevier Ltd",

number = "10",

}

TY - JOUR

T1 - Two phenolic friedo-23,24-dinoroleanane triterpenes from Kokoona zeylanica

AU - Gamlath, Chandra B.

AU - Gunatilaka, A. A.Leslie

N1 - Funding Information: Acknowledgements-We thank Prof. Atta-ur-Rahman (H. E. J. Research Institute of Chemistry, University of Karachi, Pakistan) and Prof. T. Kikuchi (Toyama Medical and Pharmaceutical University, Toyama, Japan) for MS data: Miss Stina-britt Nilsson (Bio-Carb AB, Lund, Sweden),f or ‘H NMR (500 MHz). “C NMR and FAB MS data; Prof. S. Balasubramaniam for identification of plant material; MS V. B. Ratnayake, P. Leanage and P. Rajanathan for technical assistance; Mrs S. C. Weerasekera for typing the manuscript; International Foundation for Science (Sweden)a nd Natural Resources, Energy and Science Authority (Sri Lanka) for financial assistance.

PY - 1988

Y1 - 1988

N2 - Two novel phenolic dinor-triterpenes isolated from Kokoona zeylanica have been identified as 23-nor-6-oxopristimerol and 23-nor-6-oxodemethylpristimerol on the basis of spectroscopic evidence and chemical interconversions. The biosynthetic significance of the co-occurrence of phenolic D:A-friedo-23, 24-dinoroleananes with phenolic and quinone-methide triterpenes in K. zeylanica is discussed.

AB - Two novel phenolic dinor-triterpenes isolated from Kokoona zeylanica have been identified as 23-nor-6-oxopristimerol and 23-nor-6-oxodemethylpristimerol on the basis of spectroscopic evidence and chemical interconversions. The biosynthetic significance of the co-occurrence of phenolic D:A-friedo-23, 24-dinoroleananes with phenolic and quinone-methide triterpenes in K. zeylanica is discussed.

KW - 23-nor-6-oxodemethylpristimerol

KW - 23-nor-6-oxopristimerol

KW - Celastraceae

KW - Kokoona zeylanica

KW - biosynthesis.

KW - demethylzeylasteral

KW - phenolic D:A-friedo-23,24-dinoroleananes

KW - structure elucidation

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U2 - 10.1016/0031-9422(88)80030-X

DO - 10.1016/0031-9422(88)80030-X

M3 - Article

AN - SCOPUS:0000829010

SN - 0031-9422

VL - 27

SP - 3221

EP - 3224

JO - Phytochemistry

JF - Phytochemistry

IS - 10

ER -

Two phenolic friedo-23,24-dinoroleanane triterpenes from Kokoona zeylanica

Abstract

Keywords

ASJC Scopus subject areas

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