Results 71 to 80 of about 2,528 (212)

Antifeedant Activity of Neo-clerodane Diterpenoids from Against Colorado Potato Beetle Larvae

open access: yesNatural Product Communications, 2017
Fourteen neo-clerodane diterpenoids isolated from Scutellaria altissima ( Lamiaceae ) were tested for insect antifeedant activity against Leptinotarsa decemlineata Say.
Petko I. Bozov, Yoana P. Georgieva
doaj   +1 more source

LC-MS-SPE-NMR for the Isolation and Characterization of neo-Clerodane Diterpenoids from Teucrium luteum subsp. flavovirens

open access: yes, 2016
neo-Clerodane diterpenes of plant origin are molecules difficult to monitor due to their nonspecific UV/vis absorption. The present work describes for the first time the application of the LC-MS-SPE-NMR technique for the isolation and characterization of
Jacques Vervoort (225685)   +3 more
core   +1 more source

Structure of Salvioccidentalin, a Diterpenoid with a Rearranged neo-Clerodane Skeleton from Salvia occidentalis

open access: yesMolecules, 2011
From the aerial parts of Salvia occidentalis (Labiatae) a new diterpenoid with a rearranged neo-clerodane skeleton was isolated. This new compound was named salvioccidentalin and its structure was established by spectroscopic means. A probable biogenetic
Jorge Cárdenas   +4 more
doaj   +1 more source

Pharmacophagy in insects: Ecological and evolutionary perspectives on the non‐nutritional use of plant specialized metabolites

open access: yesEntomologia Experimentalis et Applicata, Volume 173, Issue 7, Page 661-673, July 2025.
Insects interact with plants not only for nutrition but also to actively seek plant specialized metabolites (PSMs) for chemical defense, reproduction, and self‐medication—a behavior known as pharmacophagy. This review examines how insects across diverse orders acquire PSMs from both food and non‐food plants for non‐nutritional benefits.
Pragya Singh, Caroline Müller
wiley   +1 more source

Second Generation Synthesis of the Neo-Clerodane Diterpenoid Methyl Barbascoate

open access: yesNatural Product Communications, 2013
The second generation total synthesis of the neo-clerodane diterpenoid, methyl barbascoate, was accomplished in seven or nine linear steps via double enol triflation and subsequent palladium catalyzed double carbonylation, followed by regioselective ...
Hisahiro Hagiwara   +5 more
doaj   +1 more source

-Clerodane Diterpenoids from Verbenaceae: Structural Elucidation and Biological Activity

open access: yesNatural Product Communications, 2008
This review focuses on the occurrence and structural elucidation of neo -clerodane type diterpenes from Verbenaceae (no matter if recently reclassified based on phylogenetic research) and the semisynthetic compounds of closely related structure obtained.
Amaya Castro, Josep Coll
doaj   +1 more source

Antimicrobial Evaluation of Clerodane Diterpenes from Var.

open access: yesNatural Product Communications, 2009
Phytochemical investigation of the ethanolic extract of leaves of Polyalthia longifolia var. pendula has led to the isolation of seven clerodane diterpenoids and five alkaloids. (-)-14, 15-bisnor-3, 11 E -kolavadien-13-one (1), (-)-16-oxocleroda-3,13(14)
Koneni V. Sashidhara   +2 more
doaj   +1 more source

C-10 oxygenated neo-clerodane diterpenes from Teucrium sandrasicum

open access: yes, 1996
From the aerial parts of Teucrium sandrasicum, three new C-10 oxygenated neo-clerodane diterpenes were isolated. The structures of the compounds were established by spectral data including spin decoupling, H-1-H-1 COSY, HETCOR, COLOC and NOESY ...
Topcu, G   +7 more
core   +1 more source

New Clerodane Diterpenoid from the Bulbils of

open access: yesNatural Product Communications, 2011
A new clerodane diterpenoid has been isolated from the acetone extract of bulbils of Dioscorea bulbifera. The structure of compound 1 was established as 15,16-epoxy-6α- O -acetyl-8β-hydroxy-19-nor-clero-13(16),14-diene-17,12;18,2-diolide on the basis of ...
Kanlaya Kidyu   +6 more
doaj   +1 more source

A neo-clerodane diterpenoid from Teucrium asiaticum

open access: yes, 1997
A novel neo-clerodane diterpene, teucrasiolide, was isolated from the aerial parts of Teucrium asiaticum as a mixture of C-15 epimers. Its structure, (15R and 15S, 20R)-15,19-diacetoxy-4 alpha,18-epoxy-6-oxo-20, 7 alpha-(20-O-acetyl)-hemicetal-neo ...
Rosaria Ciriminna   +6 more
core   +1 more source

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