The present invention relates to a compound represented by Formula (I):
(wherein Ar
1
represents an imidazolyl group which may be substituted with 1 to 3 substituents; Ar
2
represents a pyridinyl group, a pyrimidinyl group, or a phenyl group which may be substituted with 1 to 3 substituents; X
1
represents (1) —C≡C— or (2) a double bond etc. which may be substituted; R
1
and R
2
represent, for example, a C1-6 alkyl group or C3-8 cycloalkyl group which may be substituted)
or a pharmacologically acceptable salt thereof and to the use thereof as pharmaceutical agents. The object of the present invention is to find a therapeutic or preventive agent for diseases caused by Aβ. According to the present invention, a therapeutic or preventive agents for diseases caused by Aβ can be provided.
cis-aminochromanols are obtained in high yield and with high selectivity over their trans counterparts by hydrogenating the corresponding oximes in the presence of a catalyst and an acid selected from HBr, HCl, and organic sulfonic acid. The cis-aminochromanols can be employed as intermediates in the production of HIV protease inhibitors which are useful for treating HIV infection and AIDS.
Process for preparing hydroxychomanones and CIS-aminochromanols
申请人:——
公开号:US20020095047A1
公开(公告)日:2002-07-18
Enantiomerically enriched hydroxychromanones are obtained by the AlCl
3
-catalyzed intramolecular Friedel-Crafts acylation of the corresponding 3-phenoxy-2-alkylcarbonyloxy-propionic acid followed by cleavage of the carboxylate in the presence of an alkali metal peroxide or hydroperoxide. Enantiomerically enriched cis-aminochromanols can then be prepared by treating the hydroxychromanones with a hydroxylamine and hydrogenating the resulting oxime. The cis-aminochromanols can be employed as intermediates in the production of HIV protease inhibitors which are useful for treating HIV infection and AIDS.
The present invention relates to a compound represented by Formula (I):
(wherein Ar
1
represents an imidazolyl group which may be substituted with 1 to 3 substituents; Ar
2
represents a pyridinyl group, a pyrimidinyl group, or a phenyl group which may be substituted with 1 to 3 substituents; X
1
represents (1) —C≡C— or (2) a double bond etc. which may be substituted; R
1
and R
2
represent, for example, a C1-6 alkyl group or C3-8 cycloalkyl group which may be substituted) or a pharmacologically acceptable salt thereof and to the use thereof as pharmaceutical agents.
The present invention relates to a process for preparing a compound of formula (6a):
wherein Ar
1
represents an imidazolyl group which may be substituted with 1 to 3 substituents shown below; Ar
2
represents a pyridinyl group, a pyrimidinyl group or a phenyl group which may be substituted with 1 to 3 substituents; and R
11
represents a group selected from certain substituents.