Rearranged abietane-type diterpenes from Salvia dichroantha

Three new irregular abietane-type diterpenes were isolated from the root of Salvia dichroantha. It was revealed by spectroscopic methods and chemical reaction that these compounds have a unique structure which contains a rearranged abietane skeleton. They were named dichroanal A and B and dichroanon...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 1999-02, Vol.50 (3), p.493-497
Main Authors: Kawazoe, Kazuyoshi, Yamamoto, Miyako, Takaishi, Yoshihisa, Honda, Gisho, Fujita, Tetsuro, Sezik, Ekrem, Yesilada, Erdem
Format: Article
Language:English
Subjects:
Abietane
Biological and medical sciences
chemical constituents of plants
Chemical constitution
chemical structure
Dichroanal A
Dichroanal B
Dichroanone
diterpenoids
Fundamental and applied biological sciences. Psychology
Labiatae
molecular conformation
nuclear magnetic resonance spectroscopy
Plant physiology and development
roots
S. tomentosa
Salvia
Salvia dichroantha
spectral analysis
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Summary:Three new irregular abietane-type diterpenes were isolated from the root of Salvia dichroantha. It was revealed by spectroscopic methods and chemical reaction that these compounds have a unique structure which contains a rearranged abietane skeleton. They were named dichroanal A and B and dichroanone and shown to be rel-(4a S,9 R,9a S)-8-formyl-1,2,3,4,4a,9a-hexahydro-5,6,9-trihydroxy-7-isopropyl-1,1,4a-trimethylfluorene; 4a S ∗-8-formyl-2,3,4,4a-tetrahydro-5,6-dihydroxy-7-isopropyl-1,1,4a-trimethyl-1 H-fluorene and 4a S ∗-2,3,4,4a-tetrahydro-6-hydroxy-7-isopropyl-1,1,4a-trimethyl-5,8(1 H)-fluorene dione, respectively. Salvia tomentosa was found to contain seven known abietane-type diterpenes.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(98)00471-3