1,3‐Difunctionalization of Aminocyclopropanes via Dielectrophilic Intermediates
作者:Ming‐Ming Wang、Jérôme Waser
DOI:10.1002/anie.201907060
日期:2019.9.23
ring-opening strategy to transform acyl, sulfonyl or carbamate protected aminocyclopropanes into 1,3-dielectrophilic carbon intermediates bearing a halide atom (Br, I) and a N,O-acetal. Replacing the alkoxy group of the N,O-acetal can be achieved under acidic conditions through an elimination-addition pathway, while substitution of the halides by nucleophiles can be done under basic conditions through a SN 2 pathway
Compound of the formula: (I) [wherein each of X
1
, X
2
, and X
3
independently represents N or CH, W represents the formula (II):(II) or the formula (III):(III) and Y represents a group of the formula (IV):(IV)], or a pharmacologically acceptable salt thereof. This compound exhibits histamine receptor H3 antagonist or inverse agonist activity and is useful of the treatment and/or prevention of obesity, diabetes, hormonal secretion abnormality, sleep, disorder, etc.
Provided are compounds of a formula (I) and their pharmaceutically-acceptable salts:
wherein X1, X2 and X3 each independently represent N or CH; W represents the following formula (II):
or the following formula (III):
Y represents a group of a formula (IV):
The compounds have a histamine-H3 receptor antagonistic or inverse-agonistic activity and are useful for remedy and/or prevention of obesity, diabetes, hormone secretion disorders, sleep disorders, etc.
7-ARYL-3,9-DIAZABICYCLO[3.3.1]NON-6-ENE DERIVATIVES AND THEIR USE AS RENIN INHIBITORS IN THE TREATMENT OF HYPERTENSION, CARDIOVASCULAR OR RENAL DISEASES