(2-Substituted oxyphenyl) alkanamide derivative, hair growth promoter and external composition for skin using the same
申请人:Shiseido Co, Ltd.
公开号:US06339154B1
公开(公告)日:2002-01-15
A (2-substituted oxyphenyl)alkanamide derivative or a salt thereof expressed by the following Formula (I):
wherein one of A and B is a hydrocarbon group of C3-30 expressed by R1 and the other is —(CH2)n—NR2R3; Z is —CO— or —CONR6—; R2 and R3 individually represent H, lower alkyl or benzyl, or —NR2R3 may be a heterocycle having 3-7 members; wherein —CONR5—(CH2)n—NR2R3 or —CONR6—(CH2)n—NR2R3 may be the following Group (D):
wherein ring Y is a heterocycle of 6 or 7 members; R4 is selected from the group consisting of H, halogen, lower alkyl, lower acyl and etc; R5 and R6 are individually H, lower alkyl, lower acyl or lower alkylcarbamoyl, or may form a part of said Group(II); 1 is 0 or 1; m is 1 or 2; and n is an integer of 0-5. The (2-substituted oxyphenyl)alkanamide derivative or the salt thereof has excellent hair growth and regrowth promoting effects, which are useful for care, improvement or prevention of hair loss in mammals and, in particular, in human.
Regioselective hydroesterification of alkenes and alkenylphenols utilizing CO<sub>2</sub> and hydrosilane
作者:Meng-Meng Wang、Sheng-Mei Lu、Can Li
DOI:10.1039/d3sc01114c
日期:——
Regioselective hydroesterification of alkenes and alkenylphenols was achieved utilizing CO2 as a CO source with the assistance of PMHS.
在 PMHS 的帮助下,利用 CO2 作为 CO 源,实现了烯烃和烯基苯酚的区域选择性酯化。
Process for producing coumarin and derivatives thereof
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0539181A1
公开(公告)日:1993-04-28
A process for producing coumarin or a derivative thereof, which process comprises dehydrogenation of 3,4-dihydrocoumarin or a derivative thereof in the presence of a palladium catalyst by heating under reduced pressure.
A process for producing octahydrocoumarins and same as a product of such process
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0757989A1
公开(公告)日:1997-02-12
The present invention involves the production of octahydrocoumarins from coumarins and/or 3,4-dihydrocoumarins in good yields by a simple process which can be industrially carried out by reducing coumarins and/or 3,4-dihydrocoumarins to octahydrocoumarins with hydrogen in the presence of an alcohol and a ruthenium catalyst, and optionally heating resultant 3-(2-hydroxycyclohexyl) propionate contained in the reduction reaction mixture to conduct cyclization/dealcoholization and convert same to octahydrocoumarins.
There are disclosed a polybutadiene composition comprising:
a polybutadiene type polymer, and
at least one compound selected from
a compound of formula (I-1):
1
or a compound of formula (1-2):
2
wherein R
11
to R
28
are the same or different and independently represent a hydrogen atom, an alkyl group, or the like; or
a compound of formula (II):
3
wherein R
1
to R
10
independently represent a hydrogen atom, an alkyl group, or the like; or
a styrene-butadiene copolymer, and a benzoin compound; and an article molded therefrom, and processes for producing the composition and the molded article.
公开了一种聚丁二烯组合物,其中包括
聚丁二烯类聚合物,以及
至少一种选自以下物质的化合物
式(I-1)化合物:
1
或式(1-2)化合物:
2
其中 R
11
至 R
28
相同或不同,且各自代表氢原子、烷基或类似物;或
式 (II) 的化合物:
3
其中 R
1
至 R
10
分别代表氢原子、烷基或类似物;或
苯乙烯-丁二烯共聚物和安息香化合物;以及由其模塑的制品,以及生产该组合物和模塑制品的工艺。