5-(5,6-Dichloro-2-indolyl)-2-methoxy-2,4-pentadienamides: Novel and Selective Inhibitors of the Vacuolar H+-ATPase of Osteoclasts with Bone Antiresorptive Activity
摘要:
The vacuolar H+-ATPase (V-ATPase) located on the ruffled border of the osteoclast, is a proton pump which is responsible for secreting the massive amounts of protons that are required for the bone resorption process. With the aim to identify new agents which are able to prevent the excessive bone resorption associated with osteoporosis, we have designed a novel class of potent and selective inhibitors of the osteoclast proton pump, starting from the structure of the specific V-ATPase inhibitor bafilomycin A(1). Compounds 3a-d potently inhibited the V-ATPase in chicken osteoclast membranes (IC50 = 60-180 nM) and were able to prevent bone resorption by human osteoclasts in vitro at low-nanomolar concentrations. Notably, the EC50 of compound 3c in this assay was 45-fold lower than the concentration required for half-maximal inhibition of the V-ATPase from human kidney cortex. These results support the validity of the osteoclast proton pump as a useful molecular target to produce novel inhibitors of bone resorption, potentially useful as antiosteporotic agents.
The present invention relates to novel oxazole compounds which act as PPAR&agr; and PPAR&ggr; agonists and are accordingly useful for the treatment of diseases modulated by PPAR&agr; and PPAR&ggr; such as diabetes.
Phenyl derivatives, their manufacture and use as pharmaceutical agents
申请人:Ackermann Jean
公开号:US20050096337A1
公开(公告)日:2005-05-05
This invention relates to compounds of the formula
wherein one of R
5
, R
6
and R
7
is
and X
1
, X
2
, Y
1
to Y
4
, R
1
to R
13
and m and n are defined in the description, and to all enantiomers and pharmaceutically acceptable salts and/or esters thereof. The invention further relates to pharmaceutical compositions containing such compounds, to a process for their preparation and to their use for the treatment and/or prevention of diseases which are modulated by PPARδ and/or PPARα agonists.
for the total synthesis of tubulysin U and N14-desacetoxytubulysin H has been developed with highstereoselectivity on a gram scale. This synthesis features an elegant cascade one-pot process to install the challenging thiazole moiety and the employment of stereoselective reductions and a series of high-yield mild reactions to ensure the requisite stereochemistry, reaction scale, and yield and to avoid
已开发出一种简洁高效的微管蛋白抑制剂 U 和 N 14 -去乙酰氧基微管蛋白抑制剂 H的全合成方法,具有克级的高立体选择性。该合成采用优雅的级联一锅法来安装具有挑战性的噻唑部分,并采用立体选择性还原和一系列高产率温和反应,以确保必要的立体化学、反应规模和产率,并避免在合成过程中发生令人烦恼的差向异构化。肽的形成。
Benzannelated derivatives, their manufacture and use as pharmaceutical agents
申请人:Ackermann Jean
公开号:US20050096336A1
公开(公告)日:2005-05-05
There are presented compounds of the formula
wherein R
6
and R
7
is
R
4
and R
5
or R
5
and R
6
together with the carbon atoms to which they are attached, form a ring as defined in the description and X
1
, X
2
, Y
1
to Y
4
, R
1
to R
13
and n are as specified in the description, and to all enantiomers and pharmaceutically acceptable salts and/or esters thereof. The invention further relates to pharmaceutical compositions containing such compounds, to a process for their preparation and to their use for the treatment and/or prevention of diseases which are modulated by PPARδ and/or PPARα agonists.