Whiskey lactone

Watermelon ketone 151 Whiskey lactone 154 Wine lees oil 203 Wood turpentine oils 222 Woodyflor 70... 

Some representatives of y-lactones are y-valerolactone 150, y-decalactone 151 with peach-like flavour, (Z)-6-dodecen-4-olide 152, 3-methyl-4-octanolide (whiskey lactone) 153 and 3-hydroxy-4,5-dimethyl-2(51T)-furanone (sotolone) 154 (Structure 4.46), found in fenugreek, coffee and sake [1-4, 21-23, 62]. 

Whiskey lactone Vitis vinifera (Vitaceae) (wine) OD-R (flowery, lactone-... 

These results indicate that compounds with malty (3-methylbutanal), sulfurus (methional), coconut-like (whiskey lactone) and phenolic (ethylguaiacol, guaiacol) odor qualities contribute to the overall flavor of barrel aged wines. 

Stereoselective anti addition of thiophenol to lV-[p-(n-butyl)methacryloyl]-10,2-camphorsultam [the key step in a synthesis of (+)-trans whiskey lactone] has been explained by a sulfur-induced, stereoelectronically directed protonation following C(P)-re face conjugate addition. ... 

Aliphatic lactones are important as aroma components in foods and flavors. Among them, y-lactones preferentially occur in plants and J-lactones are mainly found in animal products. The details on naturally-occurring lactones as aroma components are described in the literature (87). It is interesting that quercus lac-tone-a (1) and -b (2), two diastereomeric branched nonlactones, have been detected as ingredients in aged whiskeys (88, 134). These lactones were isolated from woods of some Quercus species which are widely used to make barrels for aging spirits such as whisky and brandy (72, 73). 

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