Facile and Reliable Synthesis of Tetraphenoxyborates and Their Properties
作者:Itamar M. Malkowsky、Roland Fröhlich、Ulrich Griesbach、Hermann Pütter、Siegfried R. Waldvogel
DOI:10.1002/ejic.200600074
日期:2006.4
Tetraphenoxyborates are reliably prepared in a two-step sequence, exploiting less corrosive reagents like boric acid and the corresponding phenols. The broad scope of this transformation is demonstrated in 22 examples. Several solid-state structures reveal the preferential conformation of the phenoxy moieties allowing cation interaction. Furthermore, a novel architecture of a phenoxy-substituted tetraborate
Benzopyranotriazoles, preparation of these compounds and pharmaceutical composition containing them
申请人:BEECHAM GROUP PLC
公开号:EP0007727A1
公开(公告)日:1980-02-06
Compounds of the formula
and pharmaceutically acceptable salts thereof wherein R,, R2, R3 and R4 which may be the same or different, represent hydrogen, halogen, nitro, lower alkyl, and lower alkoxy, or any adjacent two of R, to R4 taken together represent an alkyene group containing from 3 to 5 carbon atoms or a 1,4-buta-1,3-dienylene group are disclosed. Further a process for the preparation by intramolecular cyclisation of a compound of the formula
and the preparation of compounds of the formula (II). The compoundsoftheformula (I) are useful asantiallergicagents.
Aryloxymethyl derivatives of nitrogenous heterocyclic methanols and ethers thereof having cardiovascular activity
申请人:A.H. ROBINS COMPANY, INCORPORATED
公开号:EP0279707A2
公开(公告)日:1988-08-24
Novel heterocyclicmethanols are disclosed having the formula:
wherein Z is pyrrolidinyl, piperidinyl, homopiperidinyl or pyridinyl;
R¹ is hydrogen, loweralkyl or carbethoxymethyl;
R² is hydrogen, loweralkyl or cycloalkyl, phenyl or phenyl-loweralkyl;
R³ is 1 or 2-naphthalenyl, 2,3-dihydroinden-4 or 5-yl, phenyl or phenyl substituted by loweralkyl, loweralkoxy, halogen, trifluoromethyl, phenyl, methylenedioxy, nitro, amino, loweralkylamino, diloweralkylamino, loweracylamino;
the 1-position of 2-pyrrolidinyl, 2-piperidinyl or 2-homopiperidinyl may be substituted by an R⁴ loweralkyl group, or R¹ may form methylene or -CH₂-C(O)- bridges with R⁴;
the pharmaceutically acceptable salts and diastereomers thereof, which compounds have antiarrhythmic and/or hypotensive activity in animals.