Studies on terpenoids and steroids, 25. complete 1H- and 13C-nmr spectral assignments of salaciquinone, a new 7-oxo-quinonemethide dinortriterpenoid

Yasuhiro Tezuka; Tohru Kikuchi; Bhavani Dhanabalasingham; Veranja Karunaratne; A. A.Leslie Gunatilaka

doi:10.1021/np50104a012

Studies on terpenoids and steroids, 25. complete ¹H- and ¹³C-nmr spectral assignments of salaciquinone, a new 7-oxo-quinonemethide dinortriterpenoid

Yasuhiro Tezuka, Tohru Kikuchi, Bhavani Dhanabalasingham, Veranja Karunaratne, A. A.Leslie Gunatilaka

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

25 Scopus citations

Abstract

A new 7-oxo-quinonemethide dinortriterpenoid, salaciquinone [1], and a known quinonemethide dinortriterpenoid, isoiguesterin [3], were isolated from the root bark of Salada reticulata var. β-diandra (Celastraceae). The structure elucidation of salaciquinone was based on detailed 2D and nOe-difference nmr spectroscopy, leading to the complete assignment of the ¹H- and¹³C-nmr spectra and revision of some ¹H-nmr spectral assignments made previously for the related 7-oxo-quinonemethide nortriterpenoid, dispermoquinone [2]. Complete ¹H- and ¹³C-nmr spectral assignments of isoiguesterin were also made, also leading to revision of some¹³C-nmr assignments previously made for this compound.

Original language	English (US)
Pages (from-to)	270-276
Number of pages	7
Journal	Journal Of Natural Products
Volume	57
Issue number	2
DOIs	https://doi.org/10.1021/np50104a012
State	Published - Feb 1 1994
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry
Molecular Medicine
Pharmacology
Pharmaceutical Science
Drug Discovery
Complementary and alternative medicine
Organic Chemistry

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10.1021/np50104a012

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title = "Studies on terpenoids and steroids, 25. complete 1H- and 13C-nmr spectral assignments of salaciquinone, a new 7-oxo-quinonemethide dinortriterpenoid",

abstract = "A new 7-oxo-quinonemethide dinortriterpenoid, salaciquinone [1], and a known quinonemethide dinortriterpenoid, isoiguesterin [3], were isolated from the root bark of Salada reticulata var. β-diandra (Celastraceae). The structure elucidation of salaciquinone was based on detailed 2D and nOe-difference nmr spectroscopy, leading to the complete assignment of the 1H- and13C-nmr spectra and revision of some 1H-nmr spectral assignments made previously for the related 7-oxo-quinonemethide nortriterpenoid, dispermoquinone [2]. Complete 1H- and 13C-nmr spectral assignments of isoiguesterin were also made, also leading to revision of some13C-nmr assignments previously made for this compound.",

author = "Yasuhiro Tezuka and Tohru Kikuchi and Bhavani Dhanabalasingham and Veranja Karunaratne and Gunatilaka, \{A. A.Leslie\}",

year = "1994",

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doi = "10.1021/np50104a012",

language = "English (US)",

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journal = "Journal Of Natural Products",

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AU - Tezuka, Yasuhiro

AU - Kikuchi, Tohru

AU - Dhanabalasingham, Bhavani

AU - Karunaratne, Veranja

AU - Gunatilaka, A. A.Leslie

PY - 1994/2/1

Y1 - 1994/2/1

N2 - A new 7-oxo-quinonemethide dinortriterpenoid, salaciquinone [1], and a known quinonemethide dinortriterpenoid, isoiguesterin [3], were isolated from the root bark of Salada reticulata var. β-diandra (Celastraceae). The structure elucidation of salaciquinone was based on detailed 2D and nOe-difference nmr spectroscopy, leading to the complete assignment of the 1H- and13C-nmr spectra and revision of some 1H-nmr spectral assignments made previously for the related 7-oxo-quinonemethide nortriterpenoid, dispermoquinone [2]. Complete 1H- and 13C-nmr spectral assignments of isoiguesterin were also made, also leading to revision of some13C-nmr assignments previously made for this compound.

AB - A new 7-oxo-quinonemethide dinortriterpenoid, salaciquinone [1], and a known quinonemethide dinortriterpenoid, isoiguesterin [3], were isolated from the root bark of Salada reticulata var. β-diandra (Celastraceae). The structure elucidation of salaciquinone was based on detailed 2D and nOe-difference nmr spectroscopy, leading to the complete assignment of the 1H- and13C-nmr spectra and revision of some 1H-nmr spectral assignments made previously for the related 7-oxo-quinonemethide nortriterpenoid, dispermoquinone [2]. Complete 1H- and 13C-nmr spectral assignments of isoiguesterin were also made, also leading to revision of some13C-nmr assignments previously made for this compound.

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Studies on terpenoids and steroids, 25. complete ¹H- and ¹³C-nmr spectral assignments of salaciquinone, a new 7-oxo-quinonemethide dinortriterpenoid

Abstract

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