Compositae

Hegnauer, Robert

doi:10.1007/978-3-0348-9385-5_68

Cited by 15 publications

(1 citation statement)

References 209 publications

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“…They also prepared 6␤,10␤-dihydroxyfuranoeremophilane (␤-tetradymodiol) by reductive cleavage of the corresponding natural product, showing a hepatotoxicity equivalent to that of tetradymol. Analogues furanoeremophilanes were isolated from some species of the genus Senecio (Nachman, 1983;Hegnauer, 1989). A fungitoxic trans-dimethyltetrahydrofurano-eremophilane, cyclodebneyol, was isolated from tobacco necrosis virus (TNV) infected Nicotiana debneyi (Burden et al, 1986).…”

Section: Senecio Bonariensis H Et a (Compositae) Is A Perennial Shrmentioning

confidence: 99%

Toxic Furanoeremophilanes from Senecio bonariensis

Pomilio

Jares

1997

International Journal of Pharmacognosy

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Section: Senecio Bonariensis H Et a (Compositae) Is A Perennial Shrmentioning

confidence: 99%

Toxic Furanoeremophilanes from Senecio bonariensis

Pomilio

Jares

1997

International Journal of Pharmacognosy

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Study on Tonghaosu and Its Analogs: Isolation, Structure Identification and Synthesis of Antifeedant B‐ring‐homo‐tonghaosu

Chen

Yin

et al. 2004

Chin. J. Chem.

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The methanolic extract from a Chinese endemic Chrysanrhemum plant, Dendranthema indicum var. ammaticum, was found to show high antifeeding activity against Pieris brassicae L.. and by bioassay-guided separation, the active component, B-ring-homo-tonghaosu, 2-(2'.4'-hexadiynylidene)-1,6-dioxaspiro-[4,5]dec-3-ene (2) was isolated. Its s t m c t m was elucidated by comparing its spectroscopic data with those of 2 reported in the literatures. Furthermore new convenient total synthesis methods of B-ring-homo-tonghaosu were also developed to confirm its structure and make its further application in crop protection available. In addition, extensive comparison of spectroscopic data showed that the structure of compound 21 reported in literature should be revised to 2. Keywordstifeedan t spiroketal. B-ring-homo-tonghaosu, Deridrnnthemo indicrrm var. ammoricirm. Pieris brcrssicae, an-1 (Tonghaosu) 2 (8-ring-homo-tonghaosu) R X = CH, . C,H, elc. J *

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Synthesis and Insecticidal Structure‐Activity Relationships of Novel Tonghaosu Analogs

et al. 2006

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Twenty-one tonghaosu analogs were synthesized via hydroamination or selective reduction of the endocyclic double bond of the corresponding dienol spiroketals. Structures of all the new compounds were confirmed by 1 H NMR, IR, MS, HREIMS or elemental analysis. Their antifeedant activity against large white butterfly (Pieris brassicae L) and larvicidal activity toward mosquito (Culex quinquefasciatus Say) were examined. Some of them exhibited antifeeding activities comparable to or stronger than tonghaosu Z-1. Based on the activity data, the preliminary structure-activity relationship was also discussed, which might be instructive for finding out lead compounds with better bioactivities in the future.

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Compositae

Cited by 15 publications

References 209 publications

Toxic Furanoeremophilanes from Senecio bonariensis

Toxic Furanoeremophilanes from Senecio bonariensis

Study on Tonghaosu and Its Analogs: Isolation, Structure Identification and Synthesis of Antifeedant B‐ring‐homo‐tonghaosu

Synthesis and Insecticidal Structure‐Activity Relationships of Novel Tonghaosu Analogs

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