PENAM DERIVATIVES FOR TREATING BACTERIAL INFECTIONS
申请人:TenNor Therapeutics Limited
公开号:US20210070774A1
公开(公告)日:2021-03-11
Novel iron chelating group conjugated penam derivatives described herein show antibacterial activity, and could be used as antibacterial agents or beta-lactamase inhibitors (BLIs) which are of value for application in combination with other antibacterial agents.
o-benzoquinone photoreduction products in the presence of N,N-dimethylanilines
作者:M. P. Shurygina、Yu. A. Kurskii、S. A. Chesnokov、N. O. Druzhkov、G. K. Fukin、G. A. Abakumov、V. K. Cherkasov
DOI:10.1007/s11172-006-0458-x
日期:2006.9
Photoreduction of o-benzoquinones in the presence of para-substituted N,N-dimethyl-anilines under irradiation at λ ≥ 500 nm affords pyrocatechol monoethers of the 2-(amino-methoxy)phenol type. In the subsequent dark reaction, these monoethers undergo quantitative decomposition by a heterolytic mechanism to give the corresponding pyrocatechols and nitrogen-containing compounds. The rate of this decomposition
Products and mechanisms of photochemical transformations of o-quinones
作者:M. P. Shurygina、Yu. A. Kurskii、N. O. Druzhkov、S. A. Chesnokov、G. A. Abakumov
DOI:10.1134/s0018143910030148
日期:2010.5
The photochemicaltransformations of quinones by the action of light at λ > 500 nm, namely, the photodecarbonylation and photoreduction reactions were studied with the use of a series of o-benzoquinones and 9,10-phenanthrenequinone as examples. The two-stage mechanism of the decarbonylation reaction of o-benzoquinones was established. At the first stage, rearrangement of a photoexcited quinone molecule
Penam derivatives for treating bacterial infections
申请人:TenNor Therapeutics Limited
公开号:US11040987B2
公开(公告)日:2021-06-22
Novel iron chelating group conjugated penam derivatives described herein show antibacterial activity, and could be used as antibacterial agents or beta-lactamase inhibitors (BLIs) which are of value for application in combination with other antibacterial agents.
Photoreduction of o-benzoquinones in the presence of p-bromo-N,N-dimethylaniline under irradiation (lambda > 500 nm) affords the corresponding pyrocatechols and hydroxyphenyl ethers. The latter are unstable and, in turn, decompose in the dark reaction to pyrocatechols. The ratio between pyrocatechol and hydroxyphenyl ether formed upon the photoreaction is determined by the structure of o-quinone, namely, the presence and bulk of substituents in positions 3 and 6 of the ring. The yield of pyrocatechol is maximal (60-65%) if the substituents are the same (H and H, Bu-t and Bu-t) or insignificantly differ (Pr-i and Bu-t), regardless of its bulk.