| 摘要 |
Novel compounds of the formula <CHEM> wherein each of R3 and R5 represents hydrogen or loweralkyl, n is an integer from one to four and R represents hydrogen, loweralkyl, lowercycloalkyl, lowercycloalkyl-loweralkyl, acyloxyloweralkyl, hydroxyloweralkyl, lower-alkoxyloweralkyl, nitro, halogeno, haloloweralkyl, hydroxy, loweralkoxy, acylaminoloweralkyl, aminoloweralkyl, mono- or diloweralkylaminoloweralkyl, alkanoyloxy, carboxy, loweralkoxycarbonyl, acyl, formyl, cyano or a carboxamido moiety of the structure <CHEM> wherein A is straight or branched chain alkyl with up to 12 carbon atoms, lowercycloalkyl, lowercycloalkylloweralkyl, loweralkoxyloweralkyl, hydroxyloweralkyl, fluoroloweralkyl, loweralkenyl, loweralkylthioloweralkyl, loweralkylsulfoxyloweralkyl, loweralkylsulfonylloweralkyl, thiazol, oxazolyl, thiadiazolyl, methylthiadiazolyl, furyl, pyrazolyl, tetrazolyl, methyltetrazolyl, hydroxypyrimidinyl, phenyl, pyrimidynyl-dione, or the grouping <CHEM> wherein E is a straight or branched chain or cyclic loweralkylene, x is zero or one and Q is hydroxy, loweralkoxy, amino or mono- or diloweralkylamino; or the grouping -E-R8, wherein E is as defined above and is optionally substituted by hydroxy and/or phenyl, R8 is phenyl, thiazolyl, oxazolyl, thiadiazolyl, methylthiadiazolyl, tetrazolyl, methyltetrazolyl, furyl, pyridyl, methylpyridyl or piperidinyl; and B is hydrogen, loweralkyl, lowercycloalkyl, lowercycloalkylloweralkyl, or loweralkenyl; or A and B, when taken together with the nitrogen atom to which they are attached, represent imidazolyl, morpholinyl, pyrrolidinyl, piperidinyl or piperazinyl and heterocyclic rings being optionally substituted by hydroxy, loweralkyl or hydroxyloweralkyl; and pharmaceutically acceptable salts thereof. The preparation of these compounds by five methods is described, in particular one inventive method which comprises reacting a correspondingly R-substituted salicylaldehyde and |
