Results 121 to 130 of about 463 (171)

Clerodane and seco-clerodane diterpenoids from Salvia reptans

Phytochemistry, 1991
Abstract β-Sitosterol, oleanolic and ursolic acids, the flavone diosmetin and two novel diterpenoids: 1α,2α-epoxy-3,4α-dihydrolinearolactone and salvireptanolide, a 5,6- seco -clerodane with an aromatic ring, were isolated from Salvia reptans .
Baldomero Esquivel, Obdulia Esquivel, Jorge Cárdenas, Ana Adela Sánchez, T.P. Ramamoorthy, Rubén Alfredo Toscano, Lydia Rodríguez-Hahn   +6 more
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Clerodane and aromatic seco-clerodane diterpenoids from salvia rhyacophua.

Tetrahedron, 1991
Abstract The known clerodane diterpenes salviarin 1 and 6β-hydroxy-7,8-dehydrobacchatricunactin 2, were isolated from Salvia rhyacophila together with five new clerodane diterpenoids 3-6 and 12. The structures of diterpenes 3-6 were established on spectral evidence and chemical transformations.
María del Carmen Fernández, Baldomero Esquivel, Jorge Cárdenas, Ana Adela Sánchez, Ruben Alfredo Toscano, Lydia Rodríguez-Hahn   +5 more
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Diterpenoids of the clerodane series

Chemistry of Natural Compounds, 1987
The review considers advances in the field of the study of natural clerodane diterpenoids, with coverage of the literature up to February, 1985.
M. R. Nurmukhamedova, G. T. Sidyakin
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Stereochemistry of -clerodane diterpenes

Tetrahedron, 1986
Abstract To piscicidal solidagolactones [IV, V, VII and VIII (1~4, cis -clerodane diterpenes)] isolated from Solidago altissima , a non-steroidal conformation was assigned on the basis of chemical and physicocheaical evidence. 13C NMR chemical shifts of methyl groups proved useful for determining stereochemistry of the A/B ring ...
Shunichi Manabe, Chikao Nishino
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Clerodane derivatives fromDiplostephium

Phytochemistry, 1992
Abstract The aerial parts of D. floribundum afforded, in addition to known compounds, 10 new clerodane derivatives while D. ericoides gave 2β-hydroxyhardwickiic acid and widespread compounds. The structures were elucidated by high field NMR spectroscopy. The chemotaxonomic aspects are discussed briefly.
C. Zdero, F. Bohlmann, R.M. King
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Clerodane diterpenoids from Salvia blepharophylla

Phytochemistry, 1999
Abstract Two clerodane diterpenoids, blepharolides A and B, have been isolated from Salvia blepharophylla Brandegee ex Epling. Their structures were determined using a combination of one- and two-dimensional NMR techniques. The relative stereochemistry for blepharolide A was determined by X-ray diffraction.
BISIO, ANGELA, FONTANA N, ROMUSSI, GIOVANNI, CIARALLO, GIOVANNI, DE TOMMASI N, PIZZA C, MUGNOLI A.   +6 more
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Clerodane diterpenoids from Pulicaria wightiana

Phytochemistry, 2005
Five clerodane diterpenoids have been isolated from the aerial parts of Pulicaria wightiana along with 3'5,6-trihydroxy-3,4',7-trimethoxyflavone and 2-methyl-5-hydroxy-chroman-4-one. The structures and stereochemistry of the compounds were established from spectral (mainly 1D and 2D NMR) studies.
Biswanath, Das, M, Ravinder Reddy, R, Ramu, N, Ravindranath, H, Harish, K V S, Ramakrishna, Y, Koteswar Rao, K, Harakishore, U S N, Murthy   +8 more
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ChemInform Abstract: Clerodane and Aromatic Seco‐Clerodane Diterpenoids from Salvia rhyacophila.

ChemInform, 1991
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.
M. DEL C. FERNANDEZ, B. ESQUIVEL, J. CARDENAS, A. A. SANCHEZ, R. A. TOSCANO, L. RODRIGUEZ‐HAHN   +5 more
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Rearranged (4→2)-abeo-clerodane and clerodane diterpenes from Aristolochia chamissonis

Phytochemistry, 1999
Abstract From stems of Aristolochia chamissonis Duch., five new diterpenes, one rearranged (4→2)-abeo-clerodane and four ent-clerodanes, were isolated. Their structures were determined to be (+)-(4→2)-abeo-kolavelool-3-oic acid, (−)-13-epi-2-oxokolavelool, (−)-2β-hydroxykolavelool, (−)-2β-hydroperoxykolavelool and (+)-13-epi-2α-hydroxykolavelool.
Bomm, M. D., Zukerman-Schpector, J., Lopes, LMX   +2 more
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Insect Antifeedant Activity of Clerodane Diterpenoids

Journal of Natural Products, 1994
Fourteen clerodane-type diterpenoids isolated from plants in the genera Baccharis, Teucrium, and Salvia were assayed for antifeedant activity against Tenebrio molitor larvae in order to establish structure-activity relationships. Among the compounds tested, furanoditerpenes with alpha, beta-unsaturated-gamma-lactone moieties, or C-4-epoxy substitution ...
M E, Sosa, C E, Tonn, O S, Giordano
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