发明授权
US3981893A 2-Amino-4 H-pyrane 失效
2-氨基-4H-吡喃

2-Amino-4 H-pyrane
摘要:
2-Amino-4 H-pyrane derivatives of the formula ##SPC1##WhereinR.sup.1 and R.sup.2 are the same or different and each is hydrogen or straight- or branched-chain alkyl;R.sup.3 is straight- or branched-chain alkyl, phenyl or --COOR' wherein R' is a straight, branched or cyclic saturated or unsaturated aliphatic hydrocarbon;R.sup.4 is straight, branched or cyclic alkyl or alkenyl, aryl unsubstituted or substituted by 1, 2 or 3 of the same or different substituents selected from the group consisting of alkyl, alkoxy, halogen, nitro, cyano, trifluoromethyl, carbalkoxy, and --SO.sub.n alkyl wherein n is 0, 1 or 2, orR.sup.4 is naphthyl, quinolyl, pyridyl, thienyl or furyl unsubstituted or substituted by alkyl, alkoxy or halogen;R.sup.5 is straight, branched or cyclic alkyl or --OR" wherein R" is a straight, branched or cyclic hydrocarbon or said hydrocarbon interrupted by 1 or 2 oxygen atoms; andR.sup.6 is hydrogen or alkyl;Are useful for their strong coronary action and as antihypertensive agents.
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