First Entry to [4+2] Cycloadditions Involving 5-Amino-2-furanmethanols
摘要:
The preparation of new 5-amino-2-furanmethanols bearing various amino and primary or secondary alcohol groups is described. The structures of 5-amino-2-furanmethanols as dienes are consistent with (1)H NMR data and cyloadditions of them allows the selective synthesis of tetrasubstituted aminobenzylic alcohols, amino phenols or lactones through Diels-Alder reactions.
First Entry to [4+2] Cycloadditions Involving 5-Amino-2-furanmethanols
摘要:
The preparation of new 5-amino-2-furanmethanols bearing various amino and primary or secondary alcohol groups is described. The structures of 5-amino-2-furanmethanols as dienes are consistent with (1)H NMR data and cyloadditions of them allows the selective synthesis of tetrasubstituted aminobenzylic alcohols, amino phenols or lactones through Diels-Alder reactions.
Dihydropyridine anti-ischaemic and antihypertensive agents
申请人:Pfizer Limited
公开号:EP0150939A1
公开(公告)日:1985-08-07
1,4-Dihydropyridines of the formula:
wherein R is aryl or heteroaryl; R1 and R2 are each independently C1-C4 alkyl or 2-methoxyethyl; n is 1 or 2; m is 1, 2 or 3; X is a 5 or 6 membered aromatic heterocyclic group; Z is a group -NR3R4 or a 5 or 6 membered nitrogen containing heterocyclic group; wherein R3 is H or C1-C4 alkyl; R4 is H, C1-C4 alkyl, CO(C1-C4alkyl), COCF3, CONR5R6, SO2(C1-C4 alkyl) or a heterocyclic or S02-heterocyclic group, and R5 and R are each independently H or C1-C4 alkyl or taken together with the nitrogen atom to which they are attached, they form a pyrrolidinyl, piperidyl, morpholino, piperazinyl or N-(C1-C4 alkyl) piperazinyl group; are calcium channel blockers useful as anti- isachaemic and antihypertensive agents.
The preparation of new 5-amino-2-furanmethanols bearing various amino and primary or secondary alcohol groups is described. The structures of 5-amino-2-furanmethanols as dienes are consistent with (1)H NMR data and cyloadditions of them allows the selective synthesis of tetrasubstituted aminobenzylic alcohols, amino phenols or lactones through Diels-Alder reactions.