A neurotrophin production/secretion promoting agent which comprises an azole derivative of the formula:
wherein R
1
represents a halogen atom, a heterocyclic group which may optionally be substituted, a hydroxy group which may optionally be substituted, a thiol group which may optionally be substituted, or an amino group which may optionally be substituted; A represents an acyl group which may optionally be substituted, a heterocyclic group which may optionally be substituted, a hydroxy group which may optionally be substituted, or a carboxyl group which may optionally be esterified or amidated; B represents an aromatic group which may optionally be substituted; X represents oxygen atom, sulfur atom, or nitrogen atom which may optionally be substituted; and Y represents a divalent hydrocarbon group or heterocyclic group, or a salt thereof; which is useful as an agent for preventing or treating neuropathy.
Process for the preparation of oxazole derivatives
申请人:Takeda Chemical Industries, Ltd.
公开号:US06699995B1
公开(公告)日:2004-03-02
A production method of a compound represented by the formula
wherein R1 and R2 are each a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, R3 is an electron-withdrawing group, and R4, R5 and R6 are each a hydrogen atom or an optionally substituted hydrocarbon group, or a salt thereof, is provided as an industrially advantageous production. method for forming a carbon-carbon bond at the 5-position of oxazole, which method includes reacting a compound represented by the formula
wherein the symbols in the formula are as defined above, or a salt thereof, with a compound represented by the formula
wherein the symbols in the formula are as defined above, or a salt thereof, in the presence of an acid or a base.