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A New Irregular Trihydroxy Sesquiterpene from Teucrium mascatense
Author(s) -
Ali Liaqat,
Hussain Imtiaz,
Rizvi Tania Shamim,
Khan Abdul Latif,
Shujah Shaukat,
AlSahi Jawahar Mohammed Salim,
AlHarrasi Ahmed,
Hussain Javid
Publication year - 2015
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201500100
Subject(s) - chemistry , sesquiterpene , heteronuclear single quantum coherence spectroscopy , teucrium , stereochemistry , phytochemical , two dimensional nuclear magnetic resonance spectroscopy , terpene , metabolite , carbon 13 nmr , organic chemistry , traditional medicine , biochemistry , medicine , lamiaceae
Abstract A new trihydroxy sesquiterpene, rel ‐(1 R ,4a R ,5 S ,6 S ,7 S ,8a R )‐decahydro‐6,8a‐dimethyl‐5‐(propan‐2‐yl)naphthalene‐1,6,7‐triol ( 1 ), has been isolated as a result of the phytochemical investigation on the CH 2 Cl 2 extract of Teucrium mascatense. The structure elucidation of the new constituent was carried out by the combined use of 1D‐ ( 1 H‐ and 13 C‐NMR) and 2D‐NMR (HMBC and HSQC) spectroscopic analysis, along with mass spectrometric techniques. In addition to the new constituent 1 , the known metabolite 2 , previously isolated from Crataegus pinnatifida , was also identified.