A insect and mite repellent composition in which the active ingredient is an acylated .alpha.-amine acid ester derivative of the formula ##STR1## in which R.sup.1 stands for hydrogen or for an optionally substituted alkyl, alkenyl or alkinyl radical, R.sup.2 and R.sup.5 are identical or different and stand for optically substituted alkyl, alkenyl or alkinyl radicals and R.sup.3 and R.sup.4 stand for hydrogen or optionally substituted alkyl, aralkyl or aryl, or together with the atom to which they are bonded form an optionally substituted, monocyclic ring.
PRODUCTION METHOD FOR 1-AMINO CYCLOPROPANE CARBOXYLIC ACID NONHYDRATE
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20200095188A1
公开(公告)日:2020-03-26
1-Aminocyclopropanecarboxylic acid non-hydrate can be obtained by
treating 1-aminocyclopropanecarboxylic acid hydrochloride with a tertiary amine in the presence of a C
3
-C
4
alcohol and water, keeping the reaction mixture at 50° C. or below,
collecting the precipitated crystal of 1-aminocyclopropanecarboxylic acid 0.5 hydrate by filtration, and heating the obtained crystal to 80 to 245° C.
The ring-fused heterocyclic compound or a pharmaceutically acceptable salt thereof according to the present invention has a T-type calcium channel regulatory effect, and is useful, for example, as a medicament for treating and/or preventing pruritus. The present invention provides a ring-fused heterocyclic compound represented by the following general formula (I) or a pharmaceutically acceptable salt thereof and the like which has a T-type calcium channel regulatory effect and is useful as a therapeutic and/or preventive agent for pruritus, and the like.
[wherein, R
1
represents optionally substituted lower alkyl and the like, R
2
represents optionally substituted lower alkyl and the like, R
3
represents the formula (II):
(wherein, n represents 0 or 1, R
3a
represents a hydrogen atom and the like, R
3b
represents a hydrogen atom and the like, and R
3c
represents a hydrogen atom and the like) and the like, Q represents a hydrogen atom and the like, and W
1
represents a nitrogen atom and the like, W
2
represents a nitrogen atom and the like]
The ring-fused heterocyclic compound or a pharmaceutically acceptable salt thereof according to the present invention has a T-type calcium channel regulatory effect, and is useful, for example, as a medicament for treating and/or preventing pruritus. The present invention provides a ring-fused heterocyclic compound represented by the following general formula (I) or a pharmaceutically acceptable salt thereof and the like which has a T-type calcium channel regulatory effect and is useful as a therapeutic and/or preventive agent for pruritus, and the like.
[wherein, R1 represents optionally substituted lower alkyl and the like, R2 represents optionally substituted lower alkyl and the like, R3 represents the formula (II):
(wherein, n represents 0 or 1, R3a represents a hydrogen atom and the like, R3b represents a hydrogen atom and the like, and R3c represents a hydrogen atom and the like) and the like, Q represents a hydrogen atom and the like, and W1 represents a nitrogen atom and the like, W2 represents a nitrogen atom and the like]
Production method for 1-amino cyclopropane carboxylic acid nonhydrate
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US10654793B2
公开(公告)日:2020-05-19
1-Aminocyclopropanecarboxylic acid non-hydrate can be obtained by
treating 1-aminocyclopropanecarboxylic acid hydrochloride with a tertiary amine in the presence of a C3-C4 alcohol and water,
keeping the reaction mixture at 50° C. or below,
collecting the precipitated crystal of 1-aminocyclopropanecarboxylic acid 0.5 hydrate by filtration, and
heating the obtained crystal to 80 to 245° C.