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Insect Growth Regulators, 20. Synthesis of Cyclic Analogues of Juvenile Hormone-III

✍ Scribed by Wawrzeńczyk, Czesław ;Zabż, Andrzej

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 508 KB
Volume: 1987
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.198719870302

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✦ Synopsis

The cyclic analogue rac-14b of JH-I11 and its 22 isomer roc-14a were obtained by a multi-step synthesis starting from rac-a-terpineol. The Wadsworth-Emmons reaction was applied to the formation of the carbon chain and to the introduction of the ester function (esters 8a, b and 13% b). Morphogenetic activities of the cyclic juvenoids were compared with those observed for their acyclic analogues. 2): KivinO4 (30 g, 190 mmol) in water (1800 ml) was added to racemic a-terpineol (15.4 g, 100 mmol). Manganese dioxide was filtered off and, after concentration, the product was continuously extracted with ethyl ether. The crude

1,2,8-p-Menthanetriol (

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