Results 161 to 170 of about 10,911 (198)

ChemInform Abstract: Clerodane Diterpenes in Labiatae

ChemInform, 1995
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
L. RODRIGUEZ‐HAHN, B. ESQUIVEL, J. CARDENAS   +2 more
openaire   +1 more source

A clerodane diterpene from Ajuga salicifolia

Phytochemistry, 1993
Abstract A mixture of the C- 15 epimers of the 14,15-dihydro- 15 -hydroxy derivative of ajugachin A has been isolated from the aerial parts of Ajuga salicifolia. The structures of the epimers were established by chemical and spectroscopic means.
Petko I. Bozov, Georgi Y. Papanov, Peter Y. Malakov, María C. de la Torre, Benjamín Rodríguez   +4 more
openaire   +1 more source

Clerodane diterpenes from Aristolochia species

Phytochemistry, 1987
Abstract The investigation of Aristolochia brasiliensis and A. esperanzae afforded 12 clerodane derivatives, including the following six novel ones: rel (5 S , 8 R , 9 S , 10 R )-2-oxo- ent -3-cleroden-15-oic acid, rel (5 S , 8 R , 9 S , 10 R )-2-oxo- ent -clerod-3,13-dien-15-oic acid methyl ester, (5 R , 8 R , 9 S , 10 R )- ent -3-cleroden-15 ...
Lopes, Lucia M.X., Bolzani, Vanderlan da Silva, Trevisan, Ligia M.V.   +2 more
openaire   +2 more sources

Cytotoxic Clerodane Diterpenes from Zuelania guidonia

Journal of Natural Products, 2014
The leaves of Zuelania guidonia yielded eight new clerodane diterpenes, namely, zuelaguidins A-H (1-8), and the known clerodane diterpene esculentin A (9). Some of these structures contained a 3,6-dihydro-1,2-dioxin moiety. The new compounds were isolated and identified using 1D- and 2D-NMR experiments.
Calderón, Carlos, De Ford, Christian, Castro, Victor, Merfort, Irmgard, Murillo, Renato   +4 more
openaire   +3 more sources

cis-Clerodane Diterpene Lactones from Amphiachyris dracunculoides

Journal of Natural Products, 1990
Four cis-ent-neoclerodane lactones, amphiacrolide A [2], amphiacrolide B [3], amphiacrolide C [4] and amphiacrolide D [5] were isolated from the aerial parts of Amphiachyris dracunculoides, and their structures established by physical and chemical methods.
F M, Harraz, R W, Doskotch
openaire   +2 more sources

Antibacterial clerodane diterpenes from Goldenrod (Solidago virgaurea)

Phytochemistry, 2010
Nine clerodane diterpenes, solidagoic acids C-I (1-7), cleroda-3,13(14)-dien-16,15:18,19-diolide (8) and cleroda-3,13(14)-dien-15,16:18,19-diolide (9) were isolated and characterised from the ethanol-ethyl acetate (1:1) extract of Solidago virgaurea. The structures were determined by NMR spectroscopic analysis.
Courtney M, Starks, Russell B, Williams, Matt G, Goering, Mark, O'Neil-Johnson, Vanessa L, Norman, Jin-Feng, Hu, Eliane, Garo, Grayson W, Hough, Stephanie M, Rice, Gary R, Eldridge   +9 more
openaire   +2 more sources

Cytotoxic Clerodane Diterpenes fromPolyalthia longifolia

Planta Medica, 1991
Bioassay-directed chemical investigation of the stem bark of Polyalthia longifolia Thw. (Annonaceae) has led to a novel clerodane diterpene, 16-oxo-cleroda-3, 13(14)Z-dien-15-oic acid, which was named polyalthialdoic acid (3). The bioassays also led to the previously known related diterpenes, kolavenic acid (2) which has not been reported as a ...
G X, Zhao, J H, Jung, D L, Smith, K V, Wood, J L, McLaughlin   +4 more
openaire   +2 more sources

Cytotoxic clerodane diterpene esters from Laetia corymbulosa

Phytochemistry, 2000
Three cytotoxic clerodane diterpene esters, corymbulosins A-C, were isolated from an organic extract of the fruit of Laetia corymbulosa (Flacourtiaceae) from Peru. The structures were determined by spectroscopic methods as clerodane diterpenes unsaturated at C-3, C-13(16) and C-14.
J A, Beutler, K L, McCall, K, Herbert, T, Johnson, R H, Shoemaker, M R, Boyd   +5 more
openaire   +2 more sources

Clerodane diterpenes from Polyalthia cheliensis

Phytochemistry, 1995
Abstract Two new clerodane diterpenes, together with two known compounds, were isolated from the stem bark of Polyalthia cheliensis and identified as 16 α -hydroxy-cleroda-4(18),13(14) Z -dien-15,16-olide and cleroda-4(18),13(14) E -dien-15-oic acid, respectively, on the basis of chemical and spectral properties.
openaire   +1 more source

Neo-clerodane diterpenes from Salvia thymoides

Phytochemistry, 1997
Abstract The investigation of Salvia thymoides afforded, in addition to known triterpenes and flavones, four neo-clerodane diterpenoids, 7α-hydroxy-neo-cleroda-3,13-dien-18,19: 15,16-diolide, 7-oxo-neo-cleroda-3,13-dien-18,19: 15,16-diolide, 6α,18,19-trihydroxy-neo-cleroda-3,13-dien-15,16-olide (thymonin) and 6α,7β,18,19-tetrahydroxy-neo-cleroda-3,13,
Emma Maldonado, Alfredo Ortega
openaire   +2 more sources