Total Synthesis and Structural Reassignment of Aspergillomarasmine A
作者:Daohong Liao、Shaoqiang Yang、Jianyu Wang、Jian Zhang、Benke Hong、Fan Wu、Xiaoguang Lei
DOI:10.1002/anie.201509960
日期:2016.3.18
of NDM‐1 and has shown promising in vivo therapeutic potential in a mouse model infected with NDM‐1‐expressing Gram‐negative bacteria. The first totalsynthesis and stereochemical configuration reassignment of aspergillomarasmine A is reported. The synthesis highlights a flexible route and an effective strategy to achieve the required oxidation state at a late stage. This modular route is amenable to
Total Synthesis and Activity of the Metallo-β-lactamase Inhibitor Aspergillomarasmine A
作者:Kalinka Koteva、Andrew M. King、Alfredo Capretta、Gerard D. Wright
DOI:10.1002/anie.201510057
日期:2016.2.5
Resistance to β‐lactam antibiotics is mediated primarily by enzymes that hydrolytically inactivate the drugs by one of two mechanisms: serine nucleophilic attack or metal‐dependent activation of a water molecule. Serine β‐lactamases are countered in the clinic by several codrugs that inhibit these enzymes, thereby rescuing antibiotic action. There are no equivalent inhibitors of metallo‐β‐lactamases
Total Synthesis of Aspergillomarasmine A and Related Compounds: A Sulfamidate Approach Enables Exploration of Structure-Activity Relationships
作者:Silvia A. Albu、Kalinka Koteva、Andrew M. King、Salma Al-Karmi、Gerard D. Wright、Alfredo Capretta
DOI:10.1002/anie.201606657
日期:2016.10.10
secondary metabolite aspergillomarasmine A (AMA) has recently been identified as an inhibitor of metallo‐β‐lactamases NDM‐1 and VIM‐2. Described herein is an efficient and practical route to AMA and its related compounds by a sulfamidate approach. In addition, a series of derivatives has been prepared and tested for biological activity in an effort to explore preliminary structure activity relationships.
Catalyst- and solvent-free regioselective ring opening of aziridines with amines: application in the gram-scale synthesis of the α,β-diamino propionic derivative, aspergillomarasmine A
作者:Xing Lin、Dajun Zhang、Jing Li、Lei Zhang
DOI:10.1039/d3ob00722g
日期:——
A green and efficient approach for synthesizing α,β-diamino propionic derivatives was developed through the ring opening of α-C-alkyloxycarbonyl aziridine. This method features catalyst- and solvent-free conditions, high regioselectivity, and wide substrate scope including solid amines, and realizes the gram-scale synthesis of aspergillomarasmine A.