σ
2
P,O‐Hybrid Ligands: Synthesis of the First 4‐Hydroxy‐1,3‐benzazaphospholes by
ortho
‐Lithiation of
m
‐Amidophenyl Diethyl Phosphates
摘要:
AbstractThe m‐phosphorylanilides 2 are available from anilides 1 by the Atherton–Todd reaction; the selective ortho‐lithiation of the o′‐methyl‐protected phosphorylpivalanilide 2b with tBuLi proceeded in high yield in the presence of ClSiMe3. The ortho‐lithiation is followed by rapid 1,3‐migration of the PO3Et2 group to yield the phosphonoanilide cis/trans‐3b. This compound mainly reacts with excess LiAlH4 by reductive cyclization to form the 4‐hydroxy‐1H‐1,3‐benzazaphosphole 6. The lithiation of the o′‐unprotected phosphorylpivalanilide 2a with LDA was unselective and led to 3a and 4a in low yields, whereas additional ortho‐lithiation of the benzoyl group occurred for the lithiation of the o′‐protected phosphonobenzanilide 2c with tBuLi/LDA to give 7 in rather low yield. The reduction of crude 7 led to (benzylamino)phenol 8 and the 4‐hydroxy‐1H‐1,3‐benzazaphosphole 9 as a minor product. The properties, NMR spectroscopy data, and crystal structures of 5b, 6, and 8 are reported.
Discovery of <i>meta</i>-Amido Bromophenols as New Antitubercular Agents
作者:Jie Liang、Yun-xiang Tang、Xiang-zheng Tang、Hua-ju Liang、Yamin Gao、Cuiting Fang、Tian-yu Zhang、Ming Yan
DOI:10.1248/cpb.c18-00917
日期:2019.4.1
Gram-positive and Gram-negative bacteria. Moderate cytotoxicities and good metabolic stability were observed for the selected compounds. The results demonstrated meta-amido bromophenols as a new class of antitubercularagents with good potentials.
EPHA4 RTK INHIBITORS FOR TREATMENT OF NEUROLOGICAL AND NEURODEGENERATIVE DISORDERS AND CANCER
申请人:Nantermet Philippe G.
公开号:US20100197688A1
公开(公告)日:2010-08-05
The present invention is directed to compounds of generic formula (I)
which are inhibitors of ephrin A4. The invention is also directed to pharmaceutical compositions comprising the compounds, and to the use of the compounds and compositions in the treatment of diseases regulated by the EphA4 RTK signaling, such as neurological and neurodegenerative disorders and cancer.
[EN] 2-(6-AMINO-PYRIDIN-3-YL)-2-HYDROXYETHYLAMINE DERIVATIVES AS BETA 2-ADRENOCEPTORS AGONISTS<br/>[FR] DERIVES DE 2-(6-AMINO-PYRIDINE-3-YL)-2-HYDROXYETHYLAMINE UTILISES COMME AGONISTES DES RECEPTEURS BETA 2-ADRENERGIQUES
申请人:PFIZER LTD
公开号:WO2004108676A1
公开(公告)日:2004-12-16
The invention relates to compounds of formula (1) and to processes for the preparation of, intermediates used in the preparation of, compositions containing and the uses of, such derivatives. The compounds according to the present invention are useful in numerous diseases, disorders and conditions, in particular inflammatory, allergic and respiratory diseases, disorders and conditions.