General Photoisomerization Approach to trans-Benzobicyclo[5.1.0]octenes: Synthetic and Mechanistic Studies
摘要:
The preparation and photoisomerization of cis-bicyclo[5.1.0]octenes (+)-3, 16, and 21-23 are described. For the benzannulated substrates, the primary photochemical events established photostationary states between the cis isomers and the trans-fused cyclopropanes (+)-9, 32, 37, and 44. Studies employing enantioenriched 21, 32, and 44 demonstrated that the reactions occurred primarily but not exclusively via cleavage of the peripheral benzylic cyclopropane bonds. Utilization of the triplet quencher piperylene revealed a predominance of triplet diradical intermediates in the trans-to-cis conversions and afforded an improved protocol for preparative isomerizations.
The present invention provides a compound of formula I
The compounds of formula I demonstrate properties as Smurf-1 inhibitors and are thus useful in the treatment of a range of disorders, particularly pulmonary arterial hypertension.
Compounds containing tetrahydrobenzindole which bind to serotonin receptor and are useful in treatment or prevention of disease induced by abnormality of central peripheral serotonin controlling functions.
[EN] AMINO-PYRIDINE-CONTAINING SPLEEN TYROSINE KINASE (SYK) INHIBITORS<br/>[FR] INHIBITEURS DE TYROSINE KINASE SPLÉNIQUE CONTENANT UNE AMINOPYRIDINE
申请人:MERCK SHARP & DOHME
公开号:WO2012151137A1
公开(公告)日:2012-11-08
The invention provides certain amino-pyridine-containing compounds of the Formula (I) or pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and n are as defined herein. The invention also provides pharmaceutical compositions comprising such compounds, and methods of using the compounds for treating diseases or conditions mediated by Spleen Tyrosine Kinase (Syk) kinase.
Reaction of sodium cyanide with 5-bromo-1-benzosuberone: a reappraisal
作者:David Crich、Ste´phane Gastaldi
DOI:10.1039/a909470i
日期:——
The reaction of 5-bromo-1-benzosuberone with KCN or NaCN in hot DMSO leads, not to the formation of 5-cyano-1-benzosuberone as previously reported, but to the 4-cyano isomer via elimination to benzo-4-suberen-1-one and subsequent conjugate addition.
Novel Mast Cell-Stabilising Amine Derivatives of 3,4-Dihydronaphthalen-1(2H)-one and 6,7,8,9-Tetrahydro-5H-benzo[7]annulen-5-one
作者:James W. Barlow、Tao Zhang、Orla Woods、Adam J. Byrne、John J. Walsh
DOI:10.2174/157340611795564222
日期:2011.5.1
In an investigation of 4-amino-3,4-dihydronaphthalen-1(2H)-ones as novel modulators of allergic and inflammatory phenomena, we have investigated a series of cyclic analogues. Tertiary amines of structural types 9, 10, 20 and 21 were synthesised and evaluated for mast cell stabilising activity. In vitro and in vivo studies showed that of these compounds, the cyclohexenylamino derivatives of tetralone and benzosuberone of series 20 and 21 exhibited interesting activity both in vitro and in vivo.