Silver(I)‐ and Base‐Mediated formal [4+3] Cycloaddition of
<i>in Situ</i>
generated 1,2‐Diaza‐1,3‐dienes with
<i>C,N</i>
‐Cyclic Azomethine Imines: An Efficient Protocol for the Synthesis of Tetrazepine Derivatives
作者:Zefei Li、Shuaikang Li、Tianjiao Kan、Xinyue Wang、Xin Xin、Yunlei Hou、Ping Gong
DOI:10.1002/adsc.202000398
日期:2020.7.16
A silver(I)‐ and base‐mediated formal [4+3] cycloadditionreaction of in situ generated 1,2‐diaza‐1,3‐dienes with in situ formed C,N‐cyclic azomethine imines has been developed. This protocol provided an efficient method for the synthesis of biologically important 1,2,4,5‐tetrazepine derivatives with a wild substrate scope and excellent functional group tolerance in moderate to excellent yields.
Branched chain amino acid-dependent aminotransferase inhibitors and their use in the treatment of neurodegenerative diseases
申请人:——
公开号:US20030149110A1
公开(公告)日:2003-08-07
The invention relates to BCAT inhibitors and the use thereof for treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease and Down's syndrome, treating or preventing the adverse consequences of the overstimulation of the excitatory amino acids, treating anxiety, psychosis, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headache, chronic pain, neuropathic pain, Parkinson's disease, diabetic retinopathy, glaucoma, CMV retinitis, urinary incontinence, opioid tolerance or withdrawal, and inducing anesthesia, as well as for enhancing cognition.
We have developed a protocol for the NaHSO3‐promoted esterification of sulfonyl hydrazides with alcohols for the synthesis of sulfinicesters. Various sulfonyl hydrazides could be converted to the corresponding sulfinicesters in good to high yields. The merits of this protocol include mild transition‐metal‐free reaction conditions, an inexpensive and available reagent, and operational simplicity.
denitrogenative and desulfinative addition of arylsulfonyl hydrazides with nitriles has been successfully achieved under mild conditions. This transformation is a new method for the addition reaction to nitriles with arylsulfonyl hydrazides as arylating agent, thus providing an alternative synthesis of aryl ketones. The reported addition reaction is tolerant to many common functional groups, and works
Synthesis of benzimidazole derivatives as potent inhibitors for α-amylase and their molecular docking study in management of type-II diabetes
作者:Shafqat Hussain、Muhammad Taha、Fazal Rahim、Shawkat Hayat、Khalid Zaman、Naveed Iqbal、Manikandan Selvaraj、Muhammad Sajid、Masroor Ahmad Bangesh、Fahad Khan、Khalid Mohammed Khan、Nizam Uddin、Syed Adnan Ali Shah、Muhammad Ali
DOI:10.1016/j.molstruc.2021.130029
日期:2021.5
standard drug acarbose. While others derivatives of the series showed good inhibitory potentials. All the synthesized compounds were characterized by HREI-MS, 1H and 13C-NMR spectroscopy. Structure activity relationship (SAR) has been established for all newly synthesized analogs. Binding interactions between ligands and active residues of the enzyme were confirmed through molecular docking study.