Solid-Phase Synthesis of Aspartic Peptidase Inhibitors: 3-Alkoxy-4-Aryl Piperidines
摘要:
[GRAPHICS]The 3-alkoxy-4-aryl piperidines are non-peptide peptidomimetic inhibitors of several aspartic peptidases. The solid-phase functionalization of 3,4-disubstituted piperidine scaffolds using a traceless linker strategy is described. Synthesis of diverse analogues based on this scaffold provides the potential to generate selective inhibitors of this important class of peptidase.
Highly Enantioselective Organocatalytic Oxidative Kinetic Resolution of Secondary Alcohols Using Chiral Alkoxyamines as Precatalysts: Catalyst Structure, Active Species, and Substrate Scope
The development and characterization of enantioselective organocatalyticoxidative kinetic resolution (OKR) of racemic secondaryalcoholsusing chiral alkoxyamines as precatalysts are described. A number of chiral alkoxyamines have been synthesized, and their structure-enantioselectivity correlation study in OKR has led us to identify a promising precatalyst, namely, 7-benzyl-3-n-butyl-4-oxa-5-azahomoadamantane
The present invention relates to a compound of the following formula (I) or a pharmaceutically acceptable salt thereof, being useful as a renin inhibitor.
[wherein R
1a
is halogen, etc.; R
1m
is H, etc.; G
1
is —N(R
1b
)—, etc.; G
2
is —CO—, etc.; G
3
is —C(R
1c
)(R
1d
)—, etc.; G
4
is oxygen, etc.; R
1b
is optionally substituted C
1-6
alkyl, etc.; R
1c
and R
1d
are independently the same or different, H, etc.; R
3
is H, optionally substituted C
1-6
alkyl, etc.; R
3a
, R
3b
, R
3
c and R
3d
are independently the same or different, and a group: -A-B (said A is single bond, etc., and said B is H, etc.), etc.; and n is 1, etc.]