The present invention provides an indole derivative having a melanin-concentrating hormone receptor antagonistic action, which is useful as an agent for the prophylaxis or treatment of obesity and the like.
The present invention relates to a compound represented by the formula (I):
wherein each symbol is as defined in the specification, or a salt thereof.
Efficient and stereoselective syntheses of isomerically pure 4-aminotetrahydro-2H-thiopyran 1-oxide derivatives have successfully been achieved. Isomerically pure (4-nitrophenyl)sulfonyltetrahydro-2H-thiopyran 1-oxides were identified by X-ray crystallographic analyses, and isomerically pure sulfoxide derivatives were characterized by 1H NMR. An oxidation reaction of tert-butyl(4-nitrophenyl)sulfo
已成功实现了异构体纯的4-氨基四氢-2 H-硫代吡喃1-氧化物衍生物的高效和立体选择性合成。通过X射线晶体学分析鉴定了异构体纯的(4-硝基苯基)磺酰基四氢-2 H-噻喃1-氧化物,并且通过1 H NMR表征了异构体纯的亚砜衍生物。叔丁基(4-硝基苯基)磺酰基(四氢-2 H-硫代吡喃-4-基)氨基甲酸酯与氧酮的氧化反应提供了空间控制,从而提供了高效率和选择性的反式亚砜。由所获得的反式亚砜衍生物,通过氯化氢催化的异构化方便地合成了顺式亚砜衍生物。