Results 131 to 140 of about 463 (171)

Clerodane Diterpenoids from Salvia splendens

Journal of Natural Products, 2006
Four new clerodane diterpenoids, salvisplendins A-D (1-4), have been isolated from an acetone extract of the flowers of Salvia splendens, together with an artifact (5), arising from salvisplendin D (4) by addition of diazomethane, and the already known clerodane olearin (6). The structures of the new compounds (1-5) were established mainly by 1D and 2D
FONTANA, Gianfranco, SAVONA, Giuseppe, RODRIGUEZ B.   +2 more
openaire   +3 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

neo-Clerodane diterpenoids from Baccharis flabellata

Phytochemistry, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Virginia E Juan, Juan Hikawczuk, Pedro C, Rossomando, Oscar S, Giordano, José Roberto, Saad   +3 more
openaire   +2 more sources

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
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +1 more source

Clerodanes from solidago virgaurea

Phytochemistry, 1984
Abstract The isolation and structure determination of four known and eight new cis-clerodane lactones from the aerial parts of Solidago virgaurea are described.
Aboni Goswami, Robindra N. Barua, Ram P. Sharma, Jogendra N. Baruah, Palaniappan Kulanthaivel, Werner Herz   +5 more
openaire   +1 more source

New antifeedant neo-clerodane triol. Semisynthesis and antifeedant activity of neo-clerodane diterpenoids

Tetrahedron, 1995
Abstract Methyl 2α,3β,4β-trihydroxy-neo-clerodan-15-oate was isolated from the acid fraction of Cistus populifolius and its structure determined by semisynthesis and confirmed by X-ray diffraction. Three other triols (2, 3 and 4) and an intermediate diol (5) were also synthesized as potential antifeedants.
Julio G. Urones, Pilar Basabe, Anna M. Lithgow, Isidro S. Marcos, Alicia Jiménez, David Díez, Antonio Gómez, A.J.P. White, David J. Williams, Monique S.J. Simmonds, Wally M. Blaney   +10 more
openaire   +1 more source