The reactions of flavin analogues and other heterocycles as models for bacterial bioluminescence
作者:F. McCapra、P.D. Leeson、V. Donovan、G. Perry
DOI:10.1016/s0040-4020(01)87387-7
日期:1986.1
The reactions of 10a-peroxyflavins have been examined to increase understanding of the oxidative and chemiluminescent reactions catalysed by the flavin co-enzymes. A remarkable series of structural requirements in the peroxides used has been uncovered, and in addition to serving as models for the mechanism of bacterial luciferase, they constitute a set of new chemiluminescent reactions.
Carbenium Ions in Substitution Reactions at the Amino Nitrogen Atom
作者:L. P. Yunnikova、V. V. Esenbaeva
DOI:10.1134/s1070428018070084
日期:2018.7
Tropylium, xanthylium, and tritylium salts characterized by different stabilities differently reacted with biologically active amines. The reactions of tropylium perchlorate and tetrafluoroborate with 4-(cyclohepta-2,4,6-trien-1-yl)aniline was accompanied by hydrolysis of the N-(cyclohepta-2,4,6-trien-1-yl) derivative, the N-xanthenyl derivative underwent dehydrogenation, whereas tritylium perchlorate
Described are a compound of formula (II) or (III):
The compounds are effective in the treatment of disease, including a tauopathy condition or a disease of tau protein aggregation.
所述化合物为式 (II) 或 (III):
这些化合物可有效治疗疾病,包括牛头蛋白病症或牛头蛋白聚集症。
Double-resonance-absorption microscope
申请人:——
公开号:US20010045529A1
公开(公告)日:2001-11-29
The present invention provides various techniques useful for a double-resonance-absorption microscope which realizes a super-resolution by using a double resonance absorption. As one technique, there is provided a double-resonance-absorption microscope comprising a light source for a pump light of a wavelength &lgr;
1
which excites a sample molecule to a first electronic excited state from a ground state, a light source for an erase light of a wavelength &lgr;
2
which excites the sample molecule to a second electronic excited state or a higher excited state from the first electronic excited state and overlap means for partially overlapping irradiating areas of the pump light and the erase light with each other, wherein an emission area upon deexcitation of the sample molecule to the ground state from the first electronic excited state is partially inhibited by irradiating the pump light and the erase light through the overlap means, said double-resonance-absorption microscope characterized in that there is provided, on an optical path of the erase light, a spatial filter which has a condenser lens and a collimate lens and a pinhole therebetween and performs condensing of the erase light onto the pinhole by the condenser lens and collimating of the erase light passed through the pinhole into a parallel beam by the collimate lens.
Antimicrobial and antiviral activity of pyridinium salts
作者:G. N. Dorofeenko、E. I. Sadekova、G. A. Korol'chenko、V. I. Votyakov、M. M. Timofeeva、I. V. Bruskova、L. F. Laguta、V. Ya. Klimovich、Yu. N. Simkina、M. N. Shashikhina