摘 要: | Spirocyclicsesquiterpenes,agrouPofspecialsesquiterpenoidwhichhaveaspiro[4,5]-decaneoraspiro[5,51-undecanestrUctureasthebasicskeleton,areattrctivetargetfortotaISynthesisbecauseof,inadditiontotheuniquestereostrUctUralfeatUrs,theirexcellentphysiologicalactivihesandexten-sivelyoccurringinnatUre.Inthisfamily,Q-chamigreneandD-chamigrene,isolatedfromSChisan-drachinensisI1]andChamaeoparistatwanesisl'],respectively,arecharacteristicmembers.lnthispa-per,wereportedtotalsynthesisof(t)-Q-chamigreneand…
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