Patents Assigned to Fuji Flavor Co., Ltd.
  • Method for manufacturing 4-substituted-Y-lactone and novel substance
    Patent number: 5374744
    Abstract: An alkynyl group having a triple bond at the carbon atom at the 1-position is introduced to a carbon atom at the 1-position of 2,3-O-isopropylidene-D-ribofuranose. The diol part is then cleaved to obtain a lactol compound. This lactol compound is oxidized to obtain a lactone compound. The ketal part of the lactone compound is hydrolyzed and the compound is further subjected to a reduction reaction. The hydroxyl groups at the 2- and 3-positions are then eliminated, and the double bond between the 2- and 3-positions of the resultant compound is reduced to obtain a 4-substituted-.gamma.-lactone.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: December 20, 1994
    Assignees: Japan Tobacco Inc., Fuji Flavor Co., Ltd.
    Inventors: Koshi Koseki, Hiroshi Kawakami, Takashi Ebata, Hajime Matsushita, Mikio Ono
  • Method for producing (R,Z)-5-tetradecen-4-olide
    Patent number: 5319108
    Abstract: A method for producing (R,Z)-5-tetradecen-4-olide, comprising the following reaction formulas; ##STR1##
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: June 7, 1994
    Assignees: Japan Tobacco Inc., Fuji Flavor Co., Ltd.
    Inventors: Takashi Ebata, Hiroshi Kawakami, Koshi Koseki, Hajime Matsushita, Mikio Ono
  • 2,3-dihydro-2,3,5-trimethyl-4H-pyran-4-one derivative and sex attractant for drugstore beetles
    Patent number: 4782168
    Abstract: A 2,3-dihydro-2,3,5-trimethyl-4H-pyran-4-one derivative represented by general formula: ##STR1## where R is ##STR2## --CH(OCH.sub.3).sub.2, --CH(OC.sub.2 H.sub.5).sub.2, --CHO, --CH.sub.2 OH, --CH.dbd.CH.sub.2, .dbd.CHCH.sub.2 CH.sub.3, --CH.dbd.CHCH.sub.3 or ##STR3## The derivative is useful as a sex attractant for drugstore beetles.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: November 1, 1988
    Assignees: Japan Tobacco, Inc., Fuji Flavor Co., Ltd.
    Inventors: Hisashi Kodama, Keiko Mochizuki, Masahiro Kohno, Akio Ohnishi, Mikio Ono