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Titolo:
STUDIES ON TERPENOIDS AND STEROIDS .25. COMPLETE H-1-NMR AND C-13-NMRSPECTRAL ASSIGNMENTS OF SALACIQUINONE, A NEW 7-OXO-QUINONEMETHIDE DINORTRITERPENOID
Autore:
TEZUKA Y; KIKUCHI T; DHANABALASINGHAM B; KARUNARATNE V; GUNATILAKA AAL;
Indirizzi:
TOYAMA MED & PHARMACEUT UNIV,RES INST WAKAN YAKU,SUGITANI 2680 TOYAMA93001 JAPAN TOYAMA MED & PHARMACEUT UNIV,RES INST WAKAN YAKU TOYAMA 93001 JAPAN UNIV PERADENIYA,DEPT CHEM PERADENIYA SRI LANKA
Titolo Testata:
Journal of natural products
fascicolo: 2, volume: 57, anno: 1994,
pagine: 270 - 276
SICI:
0163-3864(1994)57:2<270:SOTAS.>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRITERPENOIDS; CELASTRACEAE; NMR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
Y. Tezuka et al., "STUDIES ON TERPENOIDS AND STEROIDS .25. COMPLETE H-1-NMR AND C-13-NMRSPECTRAL ASSIGNMENTS OF SALACIQUINONE, A NEW 7-OXO-QUINONEMETHIDE DINORTRITERPENOID", Journal of natural products, 57(2), 1994, pp. 270-276

Abstract

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

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/07/20 alle ore 07:55:12