In recognition of the need to develop novel therapeutic agents and efficient methods for the synthesis thereof, the present invention provides novel compounds of general formula (I):
1
and pharmaceutically acceptable derivatives thereof, wherein R
1
, R
2
, R
3
, n, X and Y are as defined herein. The present invention also provides pharmaceutical compositions comprising a compound of formula (I) and a pharmaceutically acceptable carrier. The present invention further provides compounds capable of inhibiting histone deacetylatase activity and methods for treating disorders regulated by histone deacetylase activity (e.g., cancer and protozoal infections) comprising administering a therapeutically effective amount of a compound of formula (I) to a subject in need thereof. The present invention additionally provides methods for modulating the glucose-sensitive subset of genes downstream of Ure2p. The present invention also provides methods for preparing compounds of the invention.
[EN] SPIROPIPERIDINE ALLOSTERIC MODULATORS OF NICOTINIC ACETYLCHOLINE RECEPTORS<br/>[FR] MODULATEURS ALLOSTÉRIQUES DE SPIROPIPÉRIDINE DE RÉCEPTEURS NICOTINIQUES DE L'ACÉTYLCHOLINE
申请人:MERCK SHARP & DOHME
公开号:WO2020223136A1
公开(公告)日:2020-11-05
The present disclosure relates to compounds of formula (I) that are useful as modulators of 7α nAChR, compositions comprising such compounds, and the use of such compounds for preventing, treating, or ameliorating disease, particularly disorders of the central nervous system such as cognitive impairments in Alzheimer's disease, Parkinson's disease, and schizophrenia, as well as for L-DOPA induced-dyskinesia and inflammation.
Total Synthesis of the Marine Macrolide Amphidinolide F
作者:Laurent Ferrié、Johan Fenneteau、Bruno Figadère
DOI:10.1021/acs.orglett.8b01020
日期:2018.6.1
A new and efficient convergent approach toward the synthesis of amphidinolide F is described through the assembly of three fragments. The two trans-tetrahydrofurans were built by a diastereoselective C-glycosylation with titanium enolate of bulky N-acetyloxazolidinethiones. The side chain was inserted by a Liebeskind–Srogl cross-coupling reaction. A sulfone condensation/desulfonylation sequence, a
In recognition of the need to develop novel therapeutic agents, the present invention provides novel histone deacetylase inhibitors. These compounds include an ester bond making them sensitive to deactivation by esterases. Therefore, these compounds are particularly useful in the treatment of skin disorders. When the compounds reaches the bloodstream, an esterase or an enzyme with esterase activity cleaves the compound into biologically inactive fragments or fragments with greatly reduced activity Ideally these degradation products exhibit a short serum and/or systemic half-life and are eliminated rapidly. These compounds and pharmaceutical compositions thereof are particularly useful in treating cutaneous T-cell lymphoma, neurofibromatosis, psoriasis, hair loss, skin pigmentation, and dermatitis, for example. The present invention also provides methods for preparing compounds of the invention and intermediates thereto.
desulfonylation sequence. Our convergent strategy allowed the total synthesis of amphidinolide F and enabled a new unifying route toward the synthesis of amphidinolides C, C2, and C3 using a late-stage divergent approach. Although there were unsatisfying yields at some critical steps, our work culminated into the first total synthesis of amphidinolide C2.
Amphidinolides F、C、C2 和 C3 是从甲藻Amphidinium物种中分离出来的海洋天然产物。它们共享相同的大环内酯核心,它们之间的区别在于侧链水平。这些ampphidinolides的一个主要特征是在大环内酯核心内存在两个反式-THF环,这被认为是通过用N-乙酰基恶唑啉硫酮的烯醇钛进行C-糖基化而构建的。因此,它们全合成的最初策略是基于对应于 C 1 –C 9、C 10 –C 19和 C 20 –C 29或 C 20的三个主要片段的组装-C 34断开连接。尽管所有片段的合成都是成功的,但 C 19和 C 20之间的 C-糖基化反应被证明是一个问题。因此,设计了第二条路线。C 17和 C 18之间的新断开是基于砜加成和脱磺酰基序列。我们的收敛策略允许全合成氨苯环内酯 F,并为使用后期发散方法合成氨苯环内酯 C、C2 和 C3 开辟了一条新的统一路线。尽管在一些关键步骤的