申请人:——
公开号:US20040087519A1
公开(公告)日:2004-05-06
A compound represented by the general formula (I) or a salt thereof:
1
wherein, —X
Y— represents —CH═CH—, —CH
2
—CH
2
— or the like,
between R
1
and the carbon atom at 4′-position represents a single bond or a double bond,
between R
2
and the carbon atom at 5-position represents a single bond or a double bond, and for example, 1) when —X
Y— represents —CH═CH— or —CH
2
—CH
2
—, and
between R
1
and the carbon atom at 4′-position represents a double bond, R
1
represents ═C(R
11
)(R
12
) (wherein R
11
represents a lower alkyl group or the like and R
12
represents a hydrogen atom or the like) or the like, and R
2
represents a hydroxyl group or the like, or R
2
may be combined together with the carbon atom at 5-position to form a carbonyl group, and 2) when —X
Y— represents —CH═CH— or —CH
2
—CH
2
—, and
between R
1
and the carbon atom at 4′-position represents a single bond, R
1
represents —OCH(R
1a
)(R
1b
) (wherein R
1a
represents a lower alkyl or the like and R
1b
represents a hydrogen atom or the like) or the like, and R
2
represents a hydroxyl group or the like.
通式(I)表示的化合物或其盐:其中,—XY—代表—CH═CH—,—CH2—CH2—或类似结构,R1与4'-位置的碳原子之间表示单键或双键,R2与5-位置的碳原子之间表示单键或双键,例如,1)当—XY—代表—CH═CH—或—CH2—CH2—时,且R1与4'-位置的碳原子之间表示双键时,R1代表═C(R11)(R12)(其中R11代表较低的烷基或类似结构,R12代表氢原子或类似结构)或类似结构,R2代表羟基或类似结构,或R2可以与5-位置的碳原子结合形成羰基,2)当—XY—代表—CH═CH—或—CH2—CH2—时,且R1与4'-位置的碳原子之间表示单键时,R1代表—OCH(R1a)(R1b)(其中R1a代表较低的烷基或类似结构,R1b代表氢原子或类似结构)或类似结构,R2代表羟基或类似结构。