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Biotransformation reduction of 2-(4-methoxybenzyl)-1-cyclohexanone was investigated. A method was elaborated for the preparation of some diastereoisomeric alcohols derived from the racemic title ketone and for the determination of the products obtained. The study resulted in the synthesis of cis-(1S,2S)-(+)-2-(4-methoxybenzyl)-1-cyclohexanol and trans-(1S,2R)-(+)-2-(4-methoxybenzyl)-1-cyclohexanol in optical purity of at least 91.6 ± 1.0% and 97.5 ± 1.0%, respectively.

The syntheses of various 2-(4-hydroxybenzyl)-1-cyclohexanone derivatives are described in connection with the development of the research of substances with juvenile hormone activity.

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In a search for new hormonogen com-venogens exhibit juvenile hormone activity in pounds related to insect juvenile hormones we.insects only when ingested. They are completely have prepared and bioassayed several ß-D-glucoinactive in topical application as well as when insides of some selected secondary juvenoid alcohols, jected into the haemolymph. It is suggested that Due to localization of the activating enzyme ß-D-the highly specific and selective action of the glucopyranosidase in the epithelium and in the hydrophilic, nonvolatile, glycosidic Juvenogens lumen of the digestive tract, the glycosidic jucould be of practical importance. Juvenilhormon-Aktivität einigerglykosidischer JuvenogeneZusammenfassung: Auf der Suche nach neuen glykosidischen Juvenogene ihre JuvenilhormonVerbindungen, die sich als Vorstufen für Substan-Wirkung bei Insekten nur bei oraler Verabreichung, zen mit Insekten-Juvenilhormon-Wirkung eignen, Sie sind dagegen bei lokaler Verabreichung ebenhaben wir die ß-D-Glucoside einiger ausgewählter so wie bei Injektion in die Hämolymphe völlig sekundärer Juvenoid-Alkohole hergestellt und unwirksam. biologisch getestet.Es wird vermutet> da ß die höchst spezifische und Entsprechend der Lokalisation des demaskierenselektive Wirkung der hydrophilen, nichtflüchti-den Enzyms 0-D -Glucopyranosidase im Epithel gen glykosidischen Juvenogene praktische Bedeuund Lumen des Verdauungstraktes, entfalten die tung gewinnen kann.

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The term "insect sex pheromones" denotes compounds used for chemical communication between sexual partners in the insect kingdom. The aim of this review covering the literature 1990-1998 is to survey papers on their syntheses. A review with 201 references.