The present invention provides a safe therapeutic agent with negligible adverse effects, which activates eNOS so that it optimally functions, and thereby treats or prevents diseases or pathological conditions caused by a condition where the expression product of eNOS gene does not exhibit its proper function. More specifically, the present invention relates to an agent for treating or preventing diseases or pathological conditions caused by an increase in eNOS, which contains, as an active ingredient, a compound represented by the following formula (I) or a pharmaceutically acceptable salt thereof:
1
wherein each of R
1
and R
2
represents a hydrogen atom, or R
1
and R
2
together form a single bond, and when each of R
1
and R
2
represents a hydrogen atom, R
3
represents —CH(OH)CH(OH)CH
3
, —CH(OCOCH
3
)CH(OCOCH
3
)CH
3
, —CH
3
, —CH
2
OH or a phenyl group, and when R
1
and R
2
together form a single bond, R
3
represents —COCH(OH)CH
3
.
本发明提供了一种安全的治疗剂,其不良反应可忽略不计,它能激活 eNOS 使其发挥最佳功能,从而治疗或预防因 eNOS
基因表达产物不能发挥其正常功能而引起的疾病或病理状况。更具体地说,本发明涉及一种用于治疗或预防由 eNOS 增高引起的疾病或病理状态的制剂,它含有下式(I)代表的化合物或其药学上可接受的盐作为活性成分:
1
其中每个 R
1
和 R
2
代表氢原子,或 R
1
和 R
2
共同形成一个单键,而当每个 R
1
和 R
2
代表氢原子时,R
3
代表-CH(OH)CH(OH)CH
3
,-CH(OCOCH
3
)CH(OCOCH
3
) CH
3
, -CH
3
, -CH
2
OH 或一个苯基,而当 R
1
和 R
2
一起形成单键时,R
3
代表-COCH(OH)CH
3
.