ISOLATION OF THE DITERPENOIDS, ENT-KAURAN-16α-OL AND ENT-ATISAN-16α-OL, FROM SUNFLOWERS, AS OVIPOSITION STIMULANTS FOR THE BANDED SUNFLOWER MOTH, Cochylis hospes

@article{Morris2005ISOLATIONOT,
  title={ISOLATION OF THE DITERPENOIDS, ENT-KAURAN-16$\alpha$-OL AND ENT-ATISAN-16$\alpha$-OL, FROM SUNFLOWERS, AS OVIPOSITION STIMULANTS FOR THE BANDED SUNFLOWER MOTH, Cochylis hospes},
  author={Bruce D. Morris and Stephen P. Foster and Sharon Grugel and Laurence D. Charlet},
  journal={Journal of Chemical Ecology},
  year={2005},
  volume={31},
  pages={89-102}
}
Two diterpenoid alcohols, ent-kauran-16α-ol (1) and ent-atisan-16α-ol (2), were isolated from pre bloom (R3-R4 stage) sunflower heads as oviposition stimulants for the banded sunflower moth, Cochylis hospes. Fractionation of a sunflower head extract, by normal-phase flash column chromatography, resulted in an early eluting fraction exhibiting significant activity in an egg-laying bioassay. Compounds 1 and 2, along with ent-trachyloban- 19-oic acid (3) and ent-kaur-16-en-19-oic acid (4), were… 
Isolation of Three Diterpenoid Acids from Sunflowers, as Oviposition Stimulants for the Banded Sunflower Moth, Cochylis hospes
TLDR
Three additional diterpenoids, grandifloric acid, 15β-hydroxy-ent-trachyloban-19-oic acid (2), and 17-Hydroxy-16α-ent -kauran- 19-oIC acid (3), from polar fractions of pre-bloom sunflower head extracts stimulated oviposition by female BSFM are isolated.
Three New ent-Trachylobane Diterpenoids from Co-cultures of the Calli of Trewia nudiflora and Fusarium sp WXE
Five diterpenoids, including three new ent-trachylobane diterpenoids, i.e., (3α)-3-hydroxy-ent-trachylobane-17,19-dioic acid 19-methyl ester (1), ent-trachylobane-17,19-dioic acid 19-methyl ester
A straightforward synthesis of natural oxygenated ent-kaurenoic acid derivatives
Abstract The paper presents the synthesis of some natural diterpenoids of ent-kauranic structure, starting from ent-kaur-16-en-19-oic acid, a natural diterpenoid readily available from the dried
Helikauranoside A, a New Bioactive Diterpene
TLDR
Results suggest that this new compound may be involved in defense mechanisms of H. annuus.
Kaurane diterpenes from the fruits of Zanthoxylum leprieurii (Rutaceae)
TLDR
This is the first report on the isolation of these kaurane diterpenes (1-5) from the genus Zanthoxylum from the family Rutaceae, and among the isolated compounds, only kaurenoic acid exhibited cytotoxicity against the PC3 cell line.
Diterpenes from Xylopia langsdorffiana
The phytochemical investigation of Xylopia langsdorffiana A.St.-Hil. & Tul. led to the isolation of eight diterpenes, i.e., of the four new compounds (5β,7β,8α,9β,10α,12α)-atisane-7,16-diol 7-acetate
Occurrence, biological activities and synthesis of kaurane diterpenes and their glycosides.
This paper presents a review on kaurane diterpenes and their glycoside derivatives, covering aspects of their occurrence, biological activities and the synthesis of these natural products and their
Phytochemical, Chemopreventive and Antimalarial Activity Evaluation of Five Selected Medicinal Plants from the Cameroonian Flora
TLDR
This study generated the first phytochemical report on P. microcarpa, the most active antimalarial plant used in Cameroonian folklore medicine, and eleven novel ones were isolated from active fractions using column chromatography, thin layer chromatography and reversed-phase high-pressure liquid chromatography.
Long-Chain Free Fatty Acids from Sunflower (Asteraceae) Leaves: Allelochemicals for Host Location by the Arctiid Moth, Diacrisia casignetum Kollar (Lepidoptera: Arctiidae)
TLDR
Extraction, thin layer chromatography and gas chromatography-mass spectroscopy analyses revealed 13 free fatty acids in young, mature, and senescent leaves of Helianthus annuus L. (Asteraceae) representing 75.65%, which might be used for insect pest management programme such as baited traps.
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Total synthesis of (±)-methyl atis-16-en-19-oate (5c), a tetracyclic diterpenoid possessing a bicyclo[2.2.2]octane ring system, was accomplished. Intramolecular Diels−Alder reaction of tetraene 14
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TLDR
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