Base catalyzed Mitsunobu reactions as a tool for the synthesis of aryl sec-alkyl ethers
摘要:
A facile and versatile method for the synthesis of aryl sec-alkyl ethers from phenols with alcohols in the presence of base via a Mitsunobu reaction is described. (c) 2007 Elsevier Ltd. All rights reserved.
A pyrazolopyrimidine derivative of the formula [I]
wherein R1 is an optionally substituted aromatic ring group, an optionally substituted lower alkyl group or an optionally substituted amino group; R2 is an optionally substituted aromatic ring group; R3 is an optionally substituted lower alkyl group; and R4 is a hydrogen atom, a lower alkyl group, a halogen atom, a nitro group or an amino group;
or a pharmaceutically acceptable salt thereof is useful as an antagonist of CRF receptor.
A pyrazolopyrimidine derivative of the formula [I]
wherein R
1
is an optionally substituted aromatic ring group, an optionally substituted lower alkyl group or an optionally substituted amino group; R
2
is an optionally substituted aromatic ring group; R
3
is an optionally substituted lower alkyl group; and R
4
is a hydrogen atom, a lower alkyl group, a halogen atom, a nitro group or an amino group;
or a pharmaceutically acceptable salt thereof is useful as an antagonist of CRF receptor.
A facile and versatile method for the synthesis of aryl sec-alkyl ethers from phenols with alcohols in the presence of base via a Mitsunobu reaction is described. (c) 2007 Elsevier Ltd. All rights reserved.