The object of the present invention is to find a carotenoid compound that is excellent in water solubility.
A carotenoid derivative having a formula (I):
wherein
X represents a carbonyl group or a methylene group, one of R
1
and R
2
represents (a) or (b) and the other represents (a), (b), (c) or a hydrogen atom:
(a): —CO-A-B-D wherein A represents an alkylene group an alkenylene group, etc., B represents a formula of —S(O)
n
— or a formula of —NR
4
CONR
5
— and D represents a hydrogen atom, a carboxy group, etc.,
(b): —CO-E-F wherein E represents an alkylene group or a formula of —NR
3
— wherein R
3
represents (a1) a hydrogen atom, (b1) an alkyl group etc., and F represents a sulfo group and
(c): —CO-G wherein G represents a hydrogen atom, an alkyl group, etc.,
a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable ester or amide thereof.
本发明的目的是找到一种在
水溶性方面表现优异的类
胡萝卜素化合物。
具有以下式(I)的类
胡萝卜素衍
生物:
其中
X代表羰基或亚
甲基中的一个,R
1
和R
2
中的一个代表(a)或(b),另一个代表(a)、(b)、(c)或
氢原子:
(a):—CO-A-B-D,其中A代表烷基、
烯基等,B代表—S(O)
n
—的式或—NR
4
CONR
5
—的式,D代表
氢原子、羧基等,
(b):—CO-E-F,其中E代表烷基或—NR
3
—的式,其中R
3
代表(a1)
氢原子、(b1)烷基等,F代表磺酰基,
(c):—CO-G,其中G代表
氢原子、烷基等,
其药学上可接受的盐,或其药学上可接受的
酯或
酰胺。