Disclosed are compounds of formula:
1
and pharmaceutically acceptable salts and esters thereof, useful in treating and/or preventing Alzheimer's disease and other similar diseases, wherein R
N
, R
C
, R
1
, R
2
and R
20
are defined herein,. These compounds include inhibitors of the beta-secretase enzyme that are useful in the treatment of Alzheimer's disease and other diseases characterized by deposition of A beta peptide in a mammal. The compounds of the invention are useful in pharmaceutical compositions and methods of treatment to reduce A beta peptide formation.
Disclosed are methods for treating Alzheimer's disease, and other diseases, and/or inhibiting beta-secretase enzyme, and/or inhibiting deposition of A beta peptide in a mammal, by use of hydrazine compounds of formula (I) wherein the variables R
1
-R
9
are defined herein.
Disclosed are compounds of formula:
and pharmaceutically acceptable salts and esters thereof, useful in treating and/or preventing Alzheimer's disease and other similar diseases, wherein R
N
, R
C
, R
1
, R
2
and R
20
are defined herein. These compounds include inhibitors of the beta-secretase enzyme that are useful in the treatment of Alzheimer's disease and other diseases characterized by deposition of A beta peptide in a mammal. The compounds of the invention are useful in pharmaceutical compositions and methods of treatment to reduce A beta peptide formation.
Effective strategy for the systematic synthesis of hydrazine derivatives
作者:Aleksei Bredihhin、Uno Mäeorg
DOI:10.1016/j.tet.2008.04.096
日期:2008.7
A new and efficient strategy for the systematic synthesis of hydrazine derivatives is reported. It allows the synthesis of up to tetrasubstituted hydrazine derivatives with minimal number of steps using only one protecting group or without any of them at all. Simple and readily available starting materials such as hydrazine hydrate or phenylhydrazine can be used. A variety of substrates were used to investigate scope and limitations of this strategy, additionally one full synthetic sequence was performed. (C) 2008 Elsevier Ltd. All rights reserved.
Design, synthesis, and evaluation of novel 3-amino-4-hydrazine-cyclobut-3-ene-1,2-diones as potent and selective CXCR2 chemokine receptor antagonists
作者:Shilan Liu、Yinhui Liu、Hongmei Wang、YiLi Ding、Hao Wu、Jingchao Dong、Angela Wong、Shu-Hui Chen、Ge Li、Manuel Chan、Nicole Sawyer、Francois G. Gervais、Martin Henault、Stacia Kargman、Leanne L. Bedard、Yongxin Han、Rick Friesen、Robert B. Lobell、David M. Stout
DOI:10.1016/j.bmcl.2009.08.014
日期:2009.10
We describe herein a novel series of 3-amino-4-hydrazine-cyclobut-3-ene-1,2-diones as potent and selective inhibitors against the CXCR2 chemokine receptor and IL-8-mediated chemotaxis of a CXCR2-expressing cell line. Furthermore, these alkyl-hydrazine series inhibitors such as 5b demonstrated acceptable metabolic stability when incubated in human and rat microsomes. (C) 2009 Published by Elsevier Ltd.