Vulgarones

Meepagala KM, Sturtz G, Mischke CC, Wise D, Duke SO, Molluscicidal activity of vulgarone B against ram s horn snail Planorbella trivolvis), Pest Manag Sci 60 479-482, 2004. 

Chemical and spectroscopic evidence has been provided for the structure of the longipinane sesquiterpenoid vulgarone B (156), a co-metabolite of vulgarone A (157) in the essential oil of Chrysanthemum vulgare. ° Vulgarone B (.156) can be... 

Two more longipinane derivatives (218) and (219) have been isolated from Stevia species.A full paper on the chemistry of vulgarone A (220) and B (221) has been published." In keeping with the general rule that enantiomeric sesquiterpenoids are often found in liverworts, Matsuo have identified the... 

Several new compounds isolated from various species of Stevia have been identified as acyloxy-derivatives (273)—(277) of the previously reported longipinane sesquiterpenoid vulgarone B (272) (Vol. 7, p. 75 Vol. 8, p. 87). In... 

The structure and absolute configuration of vulgarone (32), an unusual sesquiterpene from Chrysanthemum vulgare, have been established from spectroscopic data, chemical reactions, and chiroptical comparison with (-1-)-chrysanthenone (both exhibit strong positive Cotton effects). The synthesis and absolute configuration of (-)-bisnoradamantan-2-one (33) have been reported. ... 

This same type of rearrangement has also been observed for a series of tricyclic sesquiterpenes. Thus, in the field of longipin-2-en-l-ones, both the parent vulgarone B (15) as well as the acetoxy derivatives 16 and 17 photorearrange (Scheme 7) to vulgarone A (18) and the corresponding acetoxy derivatives 19 and 20, respectively. ... 

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