Smoking compositions containing an oxalate flavorant-release additive
申请人:Philip Morris Incorporated
公开号:US05256785A1
公开(公告)日:1993-10-26
In one embodiment this invention provides smoking compositions which contain a novel oxalate ester flavorant-release additive. Under cigarette smoking conditions, a combustible filler additive such as methyl 2-pyrazinyl-2-propanyl oxalate or di(2-pyrazinyl-2-propanyl) oxalate pyrolyzes and releases 2-isopropenylpyrazine flavorant as a volatile component of the cigarette smoke. ##STR1##
However, photobiocatalytic cascade with biobased starting substrates has been rarely reported. Here, we present photobiocatalytic cascades that modify the N-heterocycle with keto acids biocatalytically synthesized from natural amino acids. The types of aliphatic, aromatic, and polar natural amino acids are compatible with the photobiocatalytic cascades system. In addition, the cascade is compatible with a