Disclosed is a method of obtaining (S)-(-)-3-(1-methyl-2-pyrrolidinyl)-2-pyridone (2) and (R)-(+)-3-(1-methyl-2-pyrrolidinyl)-2-pyridone (3) by resolving a racemic mixture of the compounds (2) and (3). More specifically, disclosed is a method of obtaining the optically active nicotine derivatives (2) and (3) shown below, which comprises steps of binding (.+-.)-3-(1-methyl-2-pyrrolidinyl)-2-pyridone to a sugar derivative, resolving the obtained compound into two types of stereoisomers, and treating them under an acidic condition. ##STR1##
A novel nicotine derivative represented by general formula (1) wherein R represents a hexose or a dihexose; and (a) represents (S)-(-)-(3)-(1-methyl-2-pyrrolidinyl)-2-pyridyl, (R)-(+)-3-(1-methyl-2-pyrrolidinyl)-2-pyridyl, (S)-(-)-5-(1-methyl-2-pyrrolidinyl)-2-pyridyl, or (R)-(+)-5-(1-methyl-2-pyrrolidinyl)-2-pyridyl.
由通式(1)代表的新型烟碱衍生物 其中 R 代表己糖或二己糖;代表(S)-(-)-(3)-(1-甲基-2-吡咯烷基)-2-吡啶基、(R)-(+)-3-(1-甲基-2-吡咯烷基)-2-吡啶基、(S)-(-)-5-(1-甲基-2-吡咯烷基)-2-吡啶基或(R)-(+)-5-(1-甲基-2-吡咯烷基)-2-吡啶基。
NICOTINE DERIVATIVE
申请人:JAPAN TOBACCO INC.
公开号:EP0628567A1
公开(公告)日:1994-12-14
A novel sugar-containing nicotine derivative represented by general formula (1), wherein R represents a ribofuranosyl group; and X represents an oxygen atom or two hydrogen atoms. This compound is an excellent smoking taste modifier and has the effects of restoring the odor and taste of tobacco lost in the production of shredded tobacco and imparting a fine pattern of spreading to the smoke. Because the compound (1) has a characteristic structure containing ribofuranose in its molecule and also containing a physiologically active nicotine as the aglycon, it is expected to be used as a medicine with a reduced toxicity besides the smoking taste modifier. The invention also provides another novel nicotine derivative represented by general formula (2) wherein X is as defined above.
一种新型含糖烟碱衍生物,由通式(1)表示,其中 R 代表一个核呋喃基团;X 代表一个氧原子或两个氢原子。这种化合物是一种极佳的烟味调节剂,具有恢复切丝烟草生产过程中损失的烟草气味和味道的作用,并能使烟雾呈现出细微的扩散模式。由于化合物(1)具有分子中含有核呋喃糖的特征结构,并且还含有具有生理活性的尼古丁作为苷元,因此除了作为烟味调节剂外,还有望用作毒性较低的药物。本发明还提供了由通式(2)表示的另一种新型尼古丁衍生物,其中 X 如上文所定义。
Wada, Archives of Biochemistry, 1957, vol. 72, p. 145,149, 1541