Results 161 to 170 of about 2,528 (212)

Clerodanes and other constituents of Cleidion spiciflorum

Phytochemistry, 2006
The polyoxygenated clerodane, spiciflorin (1a), was isolated from Cleidion spiciflorum (Burm. f.) Merr. (Euphorbiaceae). Other constituents were the glucoside of anol (2), columbin, scopoletin, 3,3',4-O-trimethylellagic acid, acetylaleuritolic acid, common triterpenes and phenols.
Waree, Naengchomnong, Paulo M, Pinho, Anake, Kijjoa, Pichan, Sawangwong, Maria José, Gonzalez, Artur M S, Silva, Graham, Eaton, Werner, Herz   +7 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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A neo-clerodane glucoside and neo-clerodane diterpenoids from Teucrium flavum subsp. Glaucum

Phytochemistry, 1984
Abstract From the aerial part of Teucrium flavum subsp. glaucum a new neo-clerodane diterpenoid, teuflavin, and a new 19-nor-neo-clerodane glucoside, teuflavoside, have been isolated, besides the previously known diterpene teuflin. The structures of teuflavin (19-acetoxy-4α,18:15,16-diepoxy-6β-hydroxy-3-keto-neo-cleroda-13(16),14-diene-20,ξ,12 S -
Giuseppe Savona, Franco Piozzi, Orietta Servettaz, Benjamín Rodríguez, Francisco Fernández-Gadea, Manuel Martín-Lomas   +5 more
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Clerodane Diterpenes in Labiatae

1994
The chemical constituents of the Labiatae family have been studied mainly for their economic value which is closely related to their high content of essential oils. These consist mostly of volatile mono- and sesquiterpenes. There is much less information on the diterpenoid content of these plants although the latter has been considered (1) potentially ...
L. Rodríguez-Hahn, B. Esquivel, J. Cárdenas   +2 more
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Cytotoxic clerodane diterpenes fromPolyalthia barnesii

Phytochemistry, 1994
Three cytotoxic clerodane diterpenes were purified from an ethyl acetate-soluble extract of the stem bark of Polyalthia barnesii, namely, 16 alpha-hydroxycleroda-3,13(14)Z-dien-15,16-olide, a known compound, and two novel compounds, 3 beta, 16 alpha-dihydroxycleroda-4(18),13(14)Z-dien-15,16-olide and 4 beta, 16 alpha-dihydroxyclerod-13(14)Z-en-15,16 ...
X, Ma, I S, Lee, H B, Chai, K, Zaw, N R, Farnsworth, D D, Soejarto, G A, Cordell, J M, Pezzuto, A D, Kinghorn   +8 more
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Clerodane furanoditerpenoids from the stems of Tinospora sinensis

Archives of Pharmacal Research, 2022
One new clerodane-type furanoditerpenoid tinosinoid A (1) and nine new nor-clerodane analogs tinosinoids B-J (2-10) have been isolated from the stems of Tinospora sinensis. The structures of the new compounds with absolute configurations have been elucidated by spectroscopic means, including MS, NMR and ECD techniques, as well as chemical correlation ...
Jun-Sheng, Zhang, De-Feng, Xu, Yin-Yin, Wang, Ren-Fen, Ma, Hua, Zhang   +4 more
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Clerodanes, seco-clerodanes, geranyl geraniol derivatives and unusual sesquiterpenes from Conyza hypoleuca

Phytochemistry, 1991
Abstract The aerial parts of Conyza hypoleuca gave in addition to known compounds,nine new clerodane derivatives, four secoclerodanes, three geranyl geraniol derivatives and five unusual sesquiterpenes derived from 10-sesquigeranic acid. The structures were elucidated by high field NMR techniques.
C. Zdero, F. Bohlmann, G.M. Mungai
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Clerodane diterpenes of Croton hovarum

Phytochemistry, 1997
Abstract A clerodane- and a nor-clerodane-type furano-diterpene were obtained from the methanolic extract of the leaves of Croton hovarum . Structural determinations which were made from spectroscopic data led to 3,12-dioxo-15,16-epoxy-cleroda-13(16), 14-dien-9-al and 3α,4β-dihydroxy-15,16-epoxy-19-nor-12-oxo-cleroda-5(10), 13 13(16),14-triene ...
Hans C. Krebs, Harisolo Ramiarantsoa
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New diterpenoids with clerodane skeleton

Phytochemistry, 1971
Abstract The structure of two diterpenoids with clerodane skeleton isolated from bulbs of Annona coriacea have been established as (1) and (2).
M. Ferrari, F. Pelizzoni, G. Ferrari
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Clerodane diterpenes of croton ururucana

Phytochemistry, 1998
Abstract Sonderianin and two novel furoclerodane diterpenes with a trans A\B ring junction were obtained from the barks of Croton ururucana . Their structures were elucidated by detailed NMR investigation, and the relative configurations established by NOE experiments. 13 C NMR values for the carbonyls of sonderianin were corrected.
Marize T.Lopes P Peres, Moacir G Pizzolatti, Rosendo A Yunes, Franco Delle Monache   +3 more
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