Bis-spirolabdane Diterpenoids from Leonotis nepetaefolia
نویسندگان
چکیده
منابع مشابه
Antimicrobial Activity of Essential Oil of Leonotis Nepetaefolia
The essential oil of Leonotis nepetaefolia (Family - Labiatae) was tested for its antibacterial activity against both Gram positive and Gram negative bacteria and found to be moderately active excepting Pseudomonas aeruginosa. The essential oil also was found to be inhibitory to dermatophytic fungi and suppressive to other aerial fungi. Hence the oil may be quite useful in skin infection due to...
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Efficacy of three different concentrations (5, 10 and 15 mg/ml) of dry flower powder of E. splendens and L. nepetaefolia was tested on the growth of aflatoxin-producing toxigenic strains of fungi A. flavus (NCBT 101) and A. parasiticus (NCBT 128) in Sabouraud dextrose agar medium (SDA). Maximum (75%) inhibition of growth of A. flavus was seen at 15 mg/ml concentration of E. splendens flower dry...
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Two new nitrogen-containing verticillene diterpenoids, cespilamides A and B (1 and 2), three new nitrogen-containing sesquiterpenoids, cespilamides C-E (3-5), and five new norverticillene and verticillene diterpenoids, cespitaenins A-E (6-10), were isolated from the Taiwanese soft coral Cespitularia taeniata. Compound 1 possesses an unusual oxazo ring system at C-10 while compound 2 displays an...
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A new abeo-abietane diterpenoid, 12-methoxy-6,11,14,16-tetrahydroxy-17(15→16)-abeo-5,8,11,13-abietatetraen-3,7-dione (8), was isolated from the hydroalcoholic extract of the herb of Clerodendrum kiangsiense along with seven known diterpenoids (1-7). Their structures were identified on the basis of spectroscopic analyses including two-dimensional NMR and comparison with literature data. All of t...
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Three new neo-clerodane diterpenoids, one C-16 epimeric pair, scutegalerins C and D, and scutegalerin E, together with the known scutaltisin B, were isolated from the acetone extractof the aerial parts of Scutellaria galericulata. The chemical structures of the new compounds were elucidated by spectroscopic techniques and a comparison with data of similar compounds as (13S,16R,19S)-6a-acetoxy-2...
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ژورنال
عنوان ژورنال: Journal of Natural Products
سال: 2012
ISSN: 0163-3864,1520-6025
DOI: 10.1021/np3000156