摘要:
2,3-Dihydro-1H-pyrrolo[1,2-a]pyrrole-1,7-dicarboxylates of the formula, ##STR1## in which each R is independently H or lower alkyl, are prepared from di(lower alkyl) 1,3-acetonedicarboxylates.
摘要:
2,3-Dihydro-1H-pyrrolo[1,2-a]pyrrole-1,7-dicarboxylate intermediates of the formula, ##STR1## in which each R is independently H or lower alkyl,are prepared from di(lower alkyl) 1,3-acetonedicarboxylates.
摘要:
2,3-Dihydro-1H-pyrrolo[1,2-a]pyrrole-1-carboxylic acid compounds of the formula, ##STR1## in which Y is OH;O.sup.- M.sup.+, wherein M is an alkali metal; orNRR', wherein R is lower alkyl and R' is lower alkyl or aryl, or NRR' is the residue of a saturated cyclic amine,are prepared from pyrrole.
摘要:
2,3-Dihydro-1H-pyrrolo[1,2-a]pyrrole-1,7-dicarboxylates of the formula, ##STR1## in which each R is independently H or lower alkyl, are prepared from from di(lower alkyl) 1,3-acetone-dicarboxylates.
摘要:
2,3-Dihydro-1H-pyrrolo[1,2-a]pyrrole-1,7-dicarboxylates of the formula, ##STR1## in which each R is independently H or lower alkyl, are prepared from di(lower alkyl) 1,3-acetone-dicarboxylates.
摘要:
The present invention relates to a novel process for producing a &dgr;-lactone of the formula: using an acyl halide of the formula: wherein R1, R2 R3 and X are described herein, as well as novel intermediates. In particular, the present invention relates to a process for enantioselectively producing the (R)-&dgr;-lactone.
摘要:
The present invention relates to a novel process for producing a &dgr;-lactone of the formula: using an acyl halide of the formula: wherein R1, R2 R3 and X are described herein, as well as novel intermediates. In particular, the present invention relates to a process for enantioselectively producing the (R)-&dgr;-lactone.
摘要:
The present invention relates to a novel process for producing a δ-lactone of the formula: using an acyl halide of the formula: wherein R1, R2 R3 and X are described herein, as well as novel intermediates. In particular, the present invention relates to a process for enantioselectively producing the (R)-δ-lactone.
摘要:
The present invention relates to a novel process for producing a &dgr;-lactone of the formula: using an acyl halide of the formula: wherein R1, R2 R3 and X are described herein, as well as novel intermediates. In particular, the present invention relates to a process for enantioselectively producing the (R)-&dgr;-lactone.
摘要:
A method of preparing 2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino)}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-yl methoxyacetate comprises contacting 6-fluoro-1-isopropyl-3,4-dihydro-1H-naphthalen-2-one with the dianion of N-�3-(1H-benzimidazol-2-yl)propyl!-N-methylacetamide to form N-�3-(1H-benzimidazol-2-yl)propyl!-2-(6-fluoro-2-hydroxy-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-yl)-N-methylacetamide, reducing this to 2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-ol, and treating the 2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-ol with methoxyacetic acid or an activated derivative of methoxyacetic acid. The invention is particularly applicable to the preparation of mibefradil, (lS,2S)-2-�2-{�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-yl methoxyacetate, and its dihydrochloride salt. N-�3-(1H-Benzimidazol-2-yl)propyl!-N-methylacetamide, and the acetic acid solvate of 2-�2- {�3-(1H-benzimidazol-2-yl)propyl!methylamino}ethyl!-6-fluoro-1-isopropyl-1,2,3,4-tetrahydronaphthalen-2-ol dioxalate, are new.