公开(公告)号：EP3572518A1

公开(公告)日：2019-11-27

申请号：EP18741889.2

申请日：2018-01-19

申请人： Takasago International Corporation

发明人： YAMADA Shinya ,  HATAKEYAMA Tadahide ,  ISHIKAWA Takahiro ,  MURAI Masato

IPC分类号： C12P7/24 ,  A61K8/00 ,  A61K8/37 ,  A61L9/01 ,  A61L9/02 ,  A61L9/04 ,  A61L9/14 ,  A61Q5/00 ,  A61Q13/00 ,  C11B9/00 ,  C11D3/50 ,  C12P7/26 ,  D06M13/12 ,  D06M13/224

摘要： The present invention pertains to a method which uses a compound represented by general formula (1) as a fragrance precursor, wherein the compound represented by general formula (1) is irradiated with light to release an unsaturated aldehyde or ketone represented by general formula (2). (In formulae (1) and (2), R 1 -R 8 and wavy lines are each as defined in the description. R 1 and R 2 , R 1 and R 3 , R 1 and R 4 , R 1 and R 5 , R 3 and R 4 , or R 3 and R 5 may form a ring.)

公开(公告)号：EP3689849A1

公开(公告)日：2020-08-05

申请号：EP18858666.3

申请日：2018-09-21

申请人： Takasago International Corporation

发明人： HATAKEYAMA Tadahide ,  YAMADA Shinya ,  MURAI Masato ,  ISHIKAWA Takahiro

IPC分类号： C07C69/736 ,  A61K8/37 ,  A61L9/01 ,  A61Q13/00 ,  C07C69/614 ,  C07C69/618 ,  C07C69/767 ,  C07C69/78 ,  C07C69/84 ,  C07C69/94 ,  C11B9/00 ,  D06M13/00

摘要： The present invention relates to a perfume precursor represented by formula (1). (In formula (1), R 1 represents a hydrogen atom, a C1-C12 alkyl group, a hydroxy group, a methoxy group, or an ethoxy group; R 2 represents a single bond, a C1-C2 alkylene group which may have a substituent, or a vinylene group which may have a substituent; R 3 represents a residue obtained by removing one hydrogen atom of a hydroxy group from a C5-C20 perfume alcohol or a phenol which may have a substituent.)

公开(公告)号：EP3492570A1

公开(公告)日：2019-06-05

申请号：EP17836985.6

申请日：2017-08-01

申请人： Takasago International Corporation

发明人： YAMADA Shinya ,  HATAKEYAMA Tadahide ,  NARA Hideki ,  ISHIKAWA Takahiro

IPC分类号： C11B9/00 ,  A61K8/35 ,  A61K8/58 ,  A61Q5/00 ,  A61Q13/00 ,  A61Q19/00 ,  C11D3/50

摘要： The present invention pertains to a method which uses a compound represented by general formula (1) as a fragrance precursor, wherein the compound represented by general formula (1) is irradiated with light to release an unsaturated aldehyde or ketone represented by general formula (2). (In formulae (1) and (2), R 1 -R 8 and wavy lines are each as defined in the description. R 1 and R 2 , R 1 and R 3 , R 1 and R 4 , R 1 and R 5 , R 3 and R 4 , or R 3 and R 5 may form a ring.)

公开(公告)号：EP2647616A1

公开(公告)日：2013-10-09

申请号：EP11844547.7

申请日：2011-12-01

申请人： Takasago International Corporation

发明人： MAEDA Hironori ,  ITOH Hisanori ,  YAMADA Shinya ,  HORI Yoji

IPC分类号： C07C29/17 ,  B01J25/02 ,  B01J31/14 ,  B01J31/28 ,  C07C35/12 ,  C07B53/00 ,  C07B61/00

CPC分类号： C07C29/132 ,  B01J21/18 ,  B01J23/44 ,  C07B53/00 ,  C07B2200/07 ,  C07C29/17 ,  C07C29/56 ,  C07C2601/14 ,  C07C35/12 ,  C07C35/17

摘要： An object of the present invention is to provide a method for manufacturing an optically active menthol having fewer steps, which generates less environmentally polluting waste because a catalytic reaction is involved in all of the steps, and is capable of saving a production cost. The present invention relates to a method for manufacturing an optically active menthol, including the following steps: A-1) asymmetrically hydrogenating at least one of geranial and neral to thereby obtain an optically active citronellal, B-1) conducting a ring-closure reaction of the optically active citronellal in the presence of an acid catalyst to thereby obtain an optically active isopulegol, and C-1) hydrogenating the optically active isopulegol to thereby obtain an optically active menthol.