The present invention provides compounds having an agonistic activity to the cannabinoid receptor, which is represented by the formula (I):
wherein R
1
is optionally substituted C1-C8 alkyl and the like; R
2
is C1-C6 alkyl; R
3
is C1-C6 alkyl and the like; or R
2
and R
3
taken together with may form an optionally substituted 5 to 10 membered non-aromatic carbon ring; R
4
is hydrogen and the like; G is a group selected from the groups shown by the formula an the like:
wherein R
5
is hydrogen and the like; X
1
is a single bond and the like; X
2
is optionally substituted C1-C8 alkylene that may be replaced by one or two groups of —O—, or —N(R
6
)—, wherein R
6
is hydrogen and the like, and the like; X
3
is a single bond and the like;
a pharmaceutically acceptable salt or a solvate thereof, and pharmaceutical compositions, atopic dermatitis treating agents, and anti-pruritus agents, especially anti-pruritus agents for oral used and for external application, which each contains the said compound as an active ingredient.
The present invention provides compounds having an agonistic activity to the cannabinoid receptor, which is represented by the formula (I):
wherein R
1
, R
2
, R
3
, R
4
, and G are defined as herein, a pharmaceutically acceptable salt or a solvate thereof, and pharmaceutical compositions, atopic dermatitis treating agents, and anti-pruritus agents, especially anti-pruritus agents for oral used and for external application, which each contains the said compound as an active ingredient.
One-Step Synthesis of β-Alkylidene-γ-lactones via Ligand-Enabled β,γ-Dehydrogenation of Aliphatic Acids
作者:Tao Sheng、Zhe Zhuang、Zhen Wang、Liang Hu、Alastair N. Herron、Jennifer X. Qiao、Jin-Quan Yu
DOI:10.1021/jacs.2c04779
日期:2022.7.20
Ligand-enabled Pd-catalyzed regioselective α,β-dehydrogenation of carbonyl compounds via β-methylene C–Hactivation has recently emerged as a promising transformation. Herein, we report the realization of β,γ-dehydrogenation and subsequent vinyl C–H olefination reactions of free carboxylicacids, thus providing a unique method for the structural diversification of aliphatic acids containing α-quaternary
Transannular C–H functionalization of cycloalkane carboxylic acids
作者:Guowei Kang、Daniel A. Strassfeld、Tao Sheng、Chia-Yu Chen、Jin-Quan Yu
DOI:10.1038/s41586-023-06000-z
日期:2023.6.15
new methods for the direct site and diastereoselective synthesis of functionalized carbocycles are highly desirable. In principle, molecular editing by C–H activation offers an ideal route to these compounds. However, the site-selective C–H functionalization of cycloalkanes remains challenging because of the strain encountered in transannular C–H palladation. Here we report that two classes of ligand