Synthesis, biological evaluation of prenylflavonoids as vasorelaxant and neuroprotective agents
摘要:
A series of prenylflavonoids with multiple hydroxyl groups were synthesized and evaluated for their vasorelaxant activities against rat aorta rings pre-contracted by phenylephrine (PE), as well as their neuroprotective effects against OGD induced PC12 cell injury. The results indicated that the prenyl group at A-ring of prenylflavonoids, as well as hydroxyl groups at B-ring was important for their activities. (+/-)Leachianone G 1b, bearing 8-prenyl and 2',4'-dihydoxyl groups, exhibited the most potent vasorelaxant and neuroprotective effects. (C) 2009 Elsevier Ltd. All rights reserved.
A new analgesic has been developed for T-type calcium channels as therapeutic targets.
The present invention provides a T-type calcium channel inhibitor which is a compound represented by formula (1):
wherein
each of R
1
and R
2
independently represents —H or —OH;
R
3
represents —OH;
R
4
represents —OH or —H;
R
5
represents a straight or branched alkyl or cycloalkyl-alkyl group having one to ten carbon atoms or a straight or branched alkenyl or cycloalkyl-alkenyl group having two to ten carbon atoms,
or a pharmaceutically acceptable salt or solvate thereof.
The present invention also provides this T-type calcium channel inhibitor, a medicament containing the T-type calcium channel inhibitor, and a therapeutic or prophylactic agent for a disease having an effective T-type calcium channel inhibitory action.
The present invention provides a T-type calcium channel inhibitor which is a compound represented by formula (1), a pharmaceutically acceptable salt of this compound or a solvate of this compound. The present invention also provides: this T-type calcium channel inhibitor; a pharmaceutical product containing this T-type calcium channel inhibitor; and a therapeutic agent or prophylactic agent for diseases, the effective action of which is a T-type calcium channel inhibitory action. (In formula (1), each of R1 and R2 independently represents H, —OH or —OR11 wherein R11 represents a C1-3 alkyl group; each of R3 and R4 independently represents H, —OH or —OR12, wherein R12 represents a C1-3 alkyl group; and each of R5 and R6 independently represents H, a halogen atom, a C1-10 alkyl group, a C2-6 alkenyl group, a C2-6 alkynyl group, a phenyl group (which may be substituted by a C1-6 alkoxy group or a halogen atom), a —C1-3 alkyl-phenyl group (which may be substituted by a C1-6 alkyloxy group or a halogen atom) or a C10-50 prenyl group.)
本发明提供了一种 T 型钙通道抑制剂,它是由式(1)代表的化合物、该化合物的药学上可接受的盐或该化合物的溶液。本发明还提供:这种 T 型钙通道抑制剂;含有这种 T 型钙通道抑制剂的药品;以及一种治疗剂或疾病预防剂,其有效作用为 T 型钙通道抑制作用。式(1)中,R1 和 R2 各自独立地代表 H、-OH 或-OR11,其中 R11 代表 C1-3 烷基;R3 和 R4 各自独立地代表 H、-OH 或-OR12,其中 R12 代表 C1-3 烷基;R5和R6各自独立地代表H、卤素原子、C1-10烷基、C2-6烯基、C2-6炔基、苯基(可被C1-6烷氧基或卤素原子取代)、-C1-3烷基苯基(可被C1-6烷氧基或卤素原子取代)或C10-50链烯基。)
US11517556B2
申请人:GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
公开号:US11517556B2
公开(公告)日:2022-12-06
The present invention relates to novel compounds capable of activating BKCa channels. The use of a composition of the present invention can effectively activate the BKCa channels, and can be used for prevention or treatment of various diseases caused by the deactivation of BKCa channels or the degradation of BKCa channel activity.