Zur Kenntnis der sesquiterpenoiden C₁₂‐Ketone des ätherischen Öls von Vetiveria zizanioides (L.) Nash

Abstract

[7].Wahrend die Verbindungen 1-3 iin sog. typischen [S]

Odds and Trends: Recent Developments in the Chemistry of Odorants

“…In ªLEau dIsseyº (I. Miyake, 1992), a watermelon note was added to this accord with Melonal (90). Finally, ozonic aspects were added to these marine and watery facets by Floralozone (86), to form a typical aquatic accord that can be found in fragrances such as ªCool Water femº (Davidoff, 1996), ªLEau dEdenº (Cacharel, 1996), and ªPolo Sport Womanº (R. Lauren, 1996). The evolution of the aquatic accord is shown in Table 1.…”

“…ªSalvatore Ferragamo pour hommeº (S. Ferragamo, 1999) is a recent REVIEWS P. Kraft et al example of a high dosage of fruity-lactonic notes, which previously were only used in such high concentrations in feminine fragrances. However, odorants such as Calone 1951 (84), Tropional (85), Floralozone (86), and Florhydral (87) have made their way into the perfumers palette, and are now commonly used. Green perfumery materials have very diverse nuances, but the galbanum direction will continue to be important.…”

Synthesis of Melithiazol B and Related Compounds via Oxidative Degradation of Myxothiazol A and Z

“…The latter are reduced by a 14-carbanion to alcohol 8, a reaction which also propagates the chain. [16] Accordingly, when the reaction was performed in presence of 18 [17] of either the C-13/C-14 or C-14/C-15 bond. Fortunately, on treatment of the crude oxidation mixture 7/8 with BF 3 -diethyl ether [18] and aqueous workup, only one product, the methyl ketone 11, [19] was obtained in an overall yield of 46% from ester 2.…”

“…[16] Accordingly, when the reaction was performed in presence of 18 [17] of either the C-13/C-14 or C-14/C-15 bond. Fortunately, on treatment of the crude oxidation mixture 7/8 with BF 3 -diethyl ether [18] and aqueous workup, only one product, the methyl ketone 11, [19] was obtained in an overall yield of 46% from ester 2. This two-step procedure could also be applied to myxothiazol A (1) leading to the corresponding ketoamide 12, [20] which in turn was Scheme 3.…”

Unravelling the Scent of Vetiver: Identification of Character‐Impact Compounds

“…They concluded their article by hypothesizing that, if most of the previous descriptions attributed a typical vetiver scent to 2, it was because of traces of highly intensive odorous contaminations [14]. In contrast with the two vetivones, khusimone (3), a minor norsesquiterpene ketone (0.4 -0.8% in vetiver oil) belonging to the zizaane class of compounds was first described by Maurer et al as providing the typical earthy, woody, vetiver scent [12] [15]. In addition to 3, Maurer identified also two trinorsesquiterpenic ketones, 4 and 5, to which he assigned strong vetiver odors.…”