Abstract
The substance is soluble in ethanol, ether, benzene, and chloroform, and sparingly soluble in carbon te t rachlor ide and water; it d issolves readi ly in alkalis in the cold (consuming 2 g-eq of alkali). On hydrogenation in ethanol with PtO 2 (according to Adams), a tetrahydro der ivat ive was obtained with the composit ion C20H300~, mp 166-168 ° C; the dehydrogenation of the substance over Se at 310-330 ° C for 15 min yielded chamazulene. All these facts indicate that the isolated substance is a sesqui terpene Tlactone containing an es te r group. The study of the substance is continuing.
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