DERIVATIVES OF N-ACYL-N'-PHENYLPIPERAZINE USEFUL (INTER ALIA) FOR THE PROPHYLAXIS OR TREATMENT OF DIABETES
申请人:Kasai Shizuo
公开号:US20120071489A1
公开(公告)日:2012-03-22
The present invention relates to a compound represented by the formula wherein each symbol is as defined in the present specification, which has a superior RBP4-lowering action and is useful as a pharmaceutical composition for the prophylaxis or treatment of a disease or condition mediated by an increase in RBP4.
Photocatalytic α‐Tertiary Amine Synthesis via C−H Alkylation of Unmasked Primary Amines
作者:Alison S. H. Ryder、William B. Cunningham、George Ballantyne、Tom Mules、Anna G. Kinsella、Jacob Turner‐Dore、Catherine M. Alder、Lee J. Edwards、Blandine S. J. McKay、Matthew N. Grayson、Alexander J. Cresswell
DOI:10.1002/anie.202005294
日期:2020.8.24
transfer (HAT) catalyst, provides a directsynthesis of α‐tertiary amines, or their corresponding γ‐lactams. We anticipate that this methodology will inspire new retrosynthetic disconnections for substituted amine derivatives in organicsynthesis, and particularly for challenging α‐tertiary primaryamines.
1-cycloalkyl-1,8-naphthyridin-4-one derivative as type IV phosphodiesterase inhibitor
申请人:Suntory Limited
公开号:US06331548B1
公开(公告)日:2001-12-18
A 1-cycloalkyl-1,8-naphthylidin-4-one derivative having the formula (I):
wherein R1 indicates a substituted or unsubstituted cycloalkyl group or a substituted or unsubstituted heterocycloalkyl group,
R2, R3, and R4 independently indicate a hydrogen atom, a substituted or unsubstituted lower alkyl group, or a halogen atom,
X indicates a group NR5R6 or a group OR7, wherein R5 and R6 independently indicate a hydrogen atom, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group, and R7 indicates a hydrogen atom, a substituted or unsubstituted lower alkyl group, or a substituted or unsubstituted cycloalkyl group or a pharmaceutically acceptable salt or solvate thereof and a type IV phosphodiesterase inhibitor containing the same as an effective component.
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。