摘要:
Methods are provided for labeling cellular glycans bearing azide groups via fluorescent labeling comprising Cu(I)-catalyzed [3+2] cycloaddition of a probe comprising alkynyl group. Generation of fluorescent probes from a nonfluorescent precursor, 4-ethynyl-N-ethyl-1,8-naphthalimide, by Cu(I)-catalyzed [3+2] cycloaddition of the alkyne group of the probe to an azido-modified sugar are provided. Incorporation of azido-containing fucose analog into glycoconjugates via the fucose salvage pathway are disclosed. Fluorescent visualization of fucosylated cells by flow cytometry of cells treated with 6-azidofucose labeled with click-activated fluorogenic probe or biotinylated alkyne is disclosed. Visualization of intracellular location of fucosylated glycoconjugates by fluorescence microscopy are disclosed.
摘要:
An object of the present invention is to provide thiazolidinone derivatives. More specifically, an object of the present invention is to provide novel compounds having a CDC7 inhibitory action.The present invention provides thiazolidinone derivatives represented by the formula (I) The compounds of the present invention inhibit the CDC7 protein kinase activity, and suppress cell proliferation.
摘要:
The present disclosure relates to a method for metabolic oligosaccharide engineering that incorporates derivatized alkyne-bearing sugar analogs as “tags” into cellular glycoconjugates. The disclosed method incorporates alkynyl derivatized Fuc and alkynyl derivatized ManNAc sugars into a cellular glycoconjugate. A chemical probe comprising an azide group and a visual probe or a fluorogenic probe is used to label the alkyne-derivatized sugar-tagged glycoconjugate. In one aspect, the chemical probe binds covalently to the alkynyl group by Cu(I)-catalyzed [3+2] azide-alkyne cycloaddition and is visualized at the cell surface, intracellularly, or in a cellular extract. The labeled glycoconjugate is capable of detection by flow cytometry, SDS-PAGE, Western blot, ELISA or confocal microscopy, and mass spectrometry.
摘要:
The disclosure provides a method of labeling of cellular glycans bearing azide groups via a fluorescent labeling technique based on Cu(I)-catalyzed [3+2]cycloaddition (click activation) of a probe comprising an alkynyl group. The method entails generating a fluorescent probe from a nonfluorescent precursor, 4-ethynyl-N-ethyl-1,8-naphthalimide, by Cu(I)-catalyzed [3+2]cycloaddition of the alkyne group of the probe with an azido-modified sugar. The disclosure further provides a method of incorporating an azido-containing fucose analog into glycoconjugates via the fucose salvage pathway. The disclosure provides a method of fluorescent visualization of fucosylated cells by flow cytometry when cells treated with 6-azidofucose are labeled with the click-activated fluorogenic probe or biotinylated alkyne. A method of visualizing the intracellular localization of fucosylated glycoconjugates by fluorescence microscopy is also disclosed.
摘要:
An object of the present invention is to provide compounds which are useful as protein kinase inhibitors.Disclosed is a 2-aminoquinazoline derivative represented by the following formula (I): wherein R1 represents a lower alkyl group which may be substituted with a halogen atom, or a halogen atom; R2 represents a hydrogen atom, a substituted or unsubstituted lower alkyl group, a halogen atom, a hydroxyl group, a substituted or unsubstituted lower alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted acylamino group, a carboxyl group, a lower alkoxycarbonyl group, a carbamoyl group, or a substituted or unsubstituted lower alkylureido group; and X, Y and Z each independently represents a hydrogen atom, a substituted or unsubstituted lower alkyl group, a halogen atom, a hydroxyl group, a carboxyl group, a lower alkoxycarbonyl group, a cyano group, a carbamoyl group, a substituted or unsubstituted lower alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted lower alkoxycarbonylamino group, a substituted or unsubstituted lower alkylaminocarbonyl group, a lower alkylsulfonylamino group, a substituted or unsubstituted lower alkylureido group, or a substituted or unsubstituted acylamino group, or X and Y may be combined to form a 5- to 6-membered ring forming a bicyclic fused ring, wherein the 5- to 6-membered ring may optionally have a substituent, provided that when X and Y are not combined to form a fused ring, R2 represents a hydrogen atom and, when X and Y are combined to form a fused ring, a saturated or unsaturated, bicyclic alicyclic or heterocyclic fused ring can be formed.
摘要翻译:本发明的目的是提供可用作蛋白激酶抑制剂的化合物。 公开了由下式(I)表示的2-氨基喹唑啉衍生物:其中R1表示可被卤素原子或卤素原子取代的低级烷基; R 2表示氢原子,取代或未取代的低级烷基,卤素原子,羟基,取代或未取代的低级烷氧基,取代或未取代的氨基,取代或未取代的酰氨基,羧基,低级 烷氧基羰基,氨基甲酰基或取代或未取代的低级烷基脲基; X,Y和Z各自独立地表示氢原子,取代或未取代的低级烷基,卤素原子,羟基,羧基,低级烷氧基羰基,氰基,氨基甲酰基,取代或未取代的 取代或未取代的低级烷氧基羰基氨基,取代或未取代的低级烷基氨基羰基,低级烷基磺酰基氨基,取代或未取代的低级烷基脲基,或取代或未取代的酰基氨基,或X 并且Y可以组合形成一个形成双环稠合环的5至6元环,其中5至6元环可以任选地具有取代基,条件是当X和Y不组合形成稠环时 R2表示氢原子,当X和Y组合形成稠环时,可以形成饱和或不饱和的双环脂环或杂环稠合环。
摘要:
A length measuring apparatus that uses an ultrasonic magnetostrictive delay line can detect a position with high accuracy by utilizing a reflected wave positively. In a measuring apparatus using an ultrasonic magnetostrictive delay line in which a wave transmitter (4) is disposed at one end of an ultrasonic magnetostrictive delay line (1), and the other end of the ultrasonic magnetostrictive delay line (1) is made an open end, a detecting coil (3) is wound around the outer periphery of the ultrasonic magnetostrictive delay line (1) over the whole area of the measuring range, a magnet piece (2) is disposed so as to become slidable along the ultrasonic magnetostrictive delay line (1) an a position of the magnet piece (2) is measured on the basis of a delay time of a detection pulse (B) produced in the detection coil (3) relative to a drive pulse (A) applied to the wave transmitter (4), a period (T.sub.1) of the drive pulse (A) applied to the wave transmitter (4) is matched with a time in which a reflected wave (C) is generated at the ultrasonic magnetostrictive delay line (1) at its one end in which the wave transmitter (4) is disposed.