The present invention provides a method of producing a heterocyclic compound useful as an agent for the prophylaxis and/or treatment of Alzheimer's disease and the like. The present invention relates to a method of producing 1,5-anhydro-2,4-dideoxy-2-(4-fluoro-5-methyl-1-oxo-6-(4-(1H-pyrazol-1-yl)benzyl)-1,3-dihydro-2H-isoindol-2-yl)-L-threo-pentitol or a salt thereof, which comprises reacting 4-fluoro-3-hydroxy-5-methyl-6-[4-(1H-pyrazol-1-yl)benzyl]-2-benzofuran-1(3H)-one or a salt thereof, 3-fluoro-2-formyl-4-methyl-5-[4-(1H-pyrazol-1-yl)benzyl]benzoic acid or a salt thereof, or a mixture thereof, with 2-amino-1,5-anhydro-2,4-dideoxy-L-threo-pentitol.
                            本发明提供了一种生产可用作预防和/或治疗阿尔茨海默病等药物的
杂环化合物的方法。本发明涉及一种生产1,5-脱氢-2,4-二脱氧-2-(4-
氟-5-甲基-1-氧代-6-(4-(1H-
吡唑-1-基)苄基)-1,3-二氢-
2H-异吲哚-2-基)-L-
硫代
戊醇或其盐的方法、其中包括将 4-
氟-3-羟基-5-甲基-6-[4-(1H-
吡唑-1-基)苄基]-2-
苯并呋喃-1(3H)-酮或其盐、3-
氟-2-甲酰基-4-甲基-5-[4-(1H-
吡唑-1-基)苄基]
苯甲酸或其盐或其混合物与 2-
氨基-1,5-脱氢-2,4-二脱氧-L-苏
氨戊醇反应。