This invention provides tobacco and non-tobacco smoking compositions which contain a substituted-heterocyclic compound as a flavorant additive. In one of its embodiments this invention provides tobacco compositions which contain a substituted-pyrazine flavorant additive such as 2,3-dihydroxy-2,3-dimethyl-1,4-bis(3,5,6-trimethyl-2-pyrazinyl)butane: ##STR1## Under smoking conditions the above illustrated substituted-pyrazine additive and its pyrolysis products flavor the mainstream and sidestream smoke.
本发明提供一种含有取代
杂环化合物作为调味添加剂的烟草和非烟草吸烟组合物。在其一种实施方案中,本发明提供含有取代
吡嗪类调味添加剂的烟草组合物,例如2,3-二羟基-2,3-二甲基-1,4-双(3,5,6-三甲基-2-
吡嗪基)
丁烷:##STR1## 在吸烟条件下,上述图示的取代
吡嗪添加剂及其热解产物为主流烟雾和旁路烟雾提供味道。