Synthesis and biological activity of 19-azasqualene 2,3-epoxide as inhibitor of 2,3-oxidosqualene cyclase
摘要:
19-Azasqualene 2,3-epoxide and its N-oxide, high-energy intermediate analogue inhibitors of 2,3-oxidosqualene (SO) cyclase, were obtained by total synthesis. These compounds were designed to mimic the C-20 carbonium ion precursor of lanosterol formed during SO cyclization. The synthesis involved the preparation Of C22 squalenoid aldehyde epoxide through a new procedure and the reconstruction of the squalenoid chain bearing a nitrogen at C-19 (pro C-20). 19-Azasqualene 2,3-epoxide was active on SO cyclase from rat and pig liver with an IC50 of 1.5 muM in pig, while in SO cyclases of yeast (S cerevisiae and C albicans) microsomes it was 20-30-fold less active. It was inactive on squalene epoxidase from rat and pig liver at the highest concentrations tested (100 muM).
Synthesis and biological activity of 19-azasqualene 2,3-epoxide as inhibitor of 2,3-oxidosqualene cyclase
摘要:
19-Azasqualene 2,3-epoxide and its N-oxide, high-energy intermediate analogue inhibitors of 2,3-oxidosqualene (SO) cyclase, were obtained by total synthesis. These compounds were designed to mimic the C-20 carbonium ion precursor of lanosterol formed during SO cyclization. The synthesis involved the preparation Of C22 squalenoid aldehyde epoxide through a new procedure and the reconstruction of the squalenoid chain bearing a nitrogen at C-19 (pro C-20). 19-Azasqualene 2,3-epoxide was active on SO cyclase from rat and pig liver with an IC50 of 1.5 muM in pig, while in SO cyclases of yeast (S cerevisiae and C albicans) microsomes it was 20-30-fold less active. It was inactive on squalene epoxidase from rat and pig liver at the highest concentrations tested (100 muM).
New compounds of formula 1 are provided which by virtue of their pharmaceutical activity as PI3-kinase modulators may be used in the therapeutic field for the treatment of inflammatory or allergic diseases.
Examples of these include inflammatory and allergic respiratory complaints, inflammatory diseases of the gastro-intestinal tract and motor apparatus, inflammatory and allergic skin diseases, inflammatory eye diseases, diseases of the nasal mucosa, inflammatory or allergic conditions involving autoimmune reactions or inflammations of the kidney.
Cyclosporins Modified on the MeBmt Sidechain by Heterocyclic Rings
申请人:Allergan, Inc.
公开号:US20160289271A1
公开(公告)日:2016-10-06
The present invention relates to novel cyclosporin analogs, processes for preparing them, pharmaceutical compositions containing them, and methods for using these analogs and the compositions containing them for the treatment of medical conditions, including but not limited to ocular conditions such as dry eye.
Use of cyclosporin alkyne/alkene analogues for preventing or treating viral-induced disorders
申请人:Molino F. Bruce
公开号:US20070232531A1
公开(公告)日:2007-10-04
The present invention relates to methods of preventing or treating a mammal with a viral-induced disorder. The method involves administering to the mammal a therapeutically effective amount of a compound represented by Formula I, as shown below:
or a pharmaceutically acceptable salt thereof, with X, R
0
, R
1
, and R
2
defined herein, under conditions effective to prevent or treat the viral-induced disorder.
Use of cyclosporin alkyne analogues for preventing or treating viral-induced disorders
申请人:Molino F. Bruce
公开号:US20070232530A1
公开(公告)日:2007-10-04
The present invention relates to methods of preventing or treating a mammal with a viral-induced disorder. The method involves administering to the mammal a therapeutically effective amount of a compound represented by Formnula I, as shown below:
or a pharmaceutically acceptable salt thereof, with X, R
0
, and R
1
defined herein, under conditions effective to prevent or treat the viral-induced disorder.
Use of cyclosporin alkene analogues for preventing or treating viral-induced disorders
申请人:Molino F. Bruce
公开号:US20070232532A1
公开(公告)日:2007-10-04
The present invention relates to methods of preventing or treating a mammal with a viral-induced disorder. The method involves administering to the mammal a therapeutically effective amount of a compound represented by Formula I, as shown below:
or a pharmaceutically acceptable salt thereof, with X, R
0
, R
1
, and R
2
defined herein, under conditions effective to prevent or treat the viral-induced disorder.