| 摘要 |
Oxathianes and 1,3-oxathiolanes are of formula: (in which (a) m and n are 0 or 1 and R1-8 are each H or an (un)satd. 1-11C lin. (branched alkyl gp.), (b) n is 1 and m is 0 or 1, R1-4 are as above, R5 and R7 are each H and R6 forms a (5-/6-substd.) cyclopentane/cyclohexane ring with R8, (c) n is 1 and m is 0 or 1. R1, R3, R5, R6 and r7 are each H, R2 is H or lower alkyl, R4 is (p-substd.) phenyl or (un)substd. cyclohexenyl and R8 is lower alkyl or (d) n is 1 and m is 0 or 1, R1,R3,R5,R6 and R7 are each H, R2 is (p-substd.) phenyl or (un)substd, cyclohexenyl, R4 is H or lower alkyl and R8 is H or lower alkyl). (I) are used to modify, improve or reinforce the organoleptic properties of foodstuffs, feedstuffs, drinks, pharmaceutical formulations, tobacco products or perfumes/perfumed compsns. Some (I) (e.g. R1=H, R2=CH3, R3=n-propyl, R4-8 = H, n=m=1 or ditto but n=0 and m=1) are extractable from naturally-occurring materials (e.g. Passiflora edulia flavicarpa) but with very low yields. These, synthetically-produced (I) according to the invention, are reproducibly produced in good yields and are stable. |
