2005
DOI: 10.1002/chin.200516163
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Abstract: Four new highly oxygenated guaiane lactones, menverins A ± D (1 ± 4), were isolated from the gorgonian Menella verrucosa (Brundin) from the South China Sea. Their structures and relative configurations were elucidated on the basis of spectroscopic data. All compounds contain a conjugated a-methyl-substituted a, bunsaturated g-lactone moiety, a C(8)C(9) conjugated with the g-lactone moiety, and an exocyclic methylene group at C(4) (trivial numbering).

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“…Previous studies on the chemical constituents of octocorals belonging to genus Menella ( Figure 1 ) have afforded a series of interesting secondary metabolites [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ], including sesquiterpenoids, menelloides A–D [ 14 , 15 ]. Menelloide E ( 1 ) was isolated as a colorless oil ( Figure 1 ), and the molecular formula for this compound was determined to be C 15 H 18 O 4 (seven units of unsaturation) using HRESIMS (C 15 H 18 O 4 + Na, m/z 285.1105, calculated 285.1103).…”
Section: Resultsmentioning
confidence: 99%
“…Previous studies on the chemical constituents of octocorals belonging to genus Menella ( Figure 1 ) have afforded a series of interesting secondary metabolites [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ], including sesquiterpenoids, menelloides A–D [ 14 , 15 ]. Menelloide E ( 1 ) was isolated as a colorless oil ( Figure 1 ), and the molecular formula for this compound was determined to be C 15 H 18 O 4 (seven units of unsaturation) using HRESIMS (C 15 H 18 O 4 + Na, m/z 285.1105, calculated 285.1103).…”
Section: Resultsmentioning
confidence: 99%
“…In previous studies, a series of interesting natural products, including steroids [ 4 , 6 , 8 ], guaiane lactones [ 5 , 7 ], briarane diterpenoids [ 8 ], menellin A (a highly oxygenated racemate with C8 skeleton) [ 8 ], picolinic acid N -methyl betaine [ 3 , 4 ], n -hexadecanol [ 4 ], 9 H -purin-6-amino- N -9-dimethyl [ 4 ], thymidine [ 4 ], and batyl alcohol [ 2 , 4 ], were isolated from gorgonian corals belonging to genus Menella , collected off the South China Sea. In our studies on the chemical constituents of a gorgonian coral identified as Menella sp., collected off the waters of Taiwan, various sesquiterpenoids featuring the guaiane, lindenane, and germacrane-type carbon skeletons, containing a γ-lactone in their structures, were isolated.…”
Section: Discussionmentioning
confidence: 99%