7 results about "Crizotinib" patented technology

Disclosed herein are methods for identifying a subject as having NSCLC that is predicted or is likely to respond to treatment with an ALK inhibitor, for example crizotinib. The methods include identifying a sample including NSCLC tumor cells as ALK-positive or ALK-negative using immunohistochemistry (IHC) and scoring methods disclosed herein. A subject is identified as having NSCLC likely to respond to treatment with an ALK inhibitor if the sample is identified as ALK-positive and is identified as having NSCLC not likely to respond to treatment with an ALK inhibitor if the sample is identified as ALK-negative. According to certain embodiments of the methods, subjects predicted to respond to an ALK inhibitor may then be treated with an ALK inhibitor such as crizotinib.

The application discloses a kind of PROTAC molecules with crizotinib as target head, preparation method and application, belong to the field of biological medicine;Preparation method includes: chloro carboxylic acid, thionyl chloride and anhydrous DMF are mixed, after heating reflux reaction, remove thionyl chloride, obtain acyl chloride;Pomalidomide, acyl chloride, organic solvent are mixed and reacted, then filtered to obtain intermediate M;Intermediate M, crizotinib, Na2CO3 are mixed and reacted, then filtered to obtain the PROTAC molecule with crizotinib as target head.The in vitro biological evaluation shows that the new PROTAC molecule can efficiently and selectively induce ubiquitination and degradation of target protein, and exhibits significant antiproliferative activity in drug-resistant tumor cell models and animal models;The application proves that the PROTAC molecule has great potential in overcoming drug resistance of traditional inhibitors, and provides a promising lead compound for developing new therapies for treating refractory diseases such as cancer.

This invention belongs to the field of biomedical technology, specifically relating to the application of crizotinib in inducing tolerant dendritic cells (tDCs). This invention provides the application of crizotinib in inducing tolerant dendritic cells. This invention discovers that crizotinib can act as a highly effective inducer of tDCs, significantly inhibiting the activated state of DCs, suppressing their maturation function, reducing their immunostimulatory capacity, and thus inhibiting T cell activation, thereby exerting a therapeutic effect in immune diseases such as GVHD. The inhibitory effects of crizotinib on DCs in this invention include reducing the expression of maturation markers CD80, CD40, and CD86. The crizotinib used in this invention is an FDA-approved ALK / ROS1 inhibitor, primarily used for the treatment of non-small cell lung cancer. This invention discovers its application in immunotherapy, realizing the repurposing of an existing drug, and has significant economic value.

A method for preparing crisaborole through in-situ cyanation relates to the field of chemical synthesis, and adopts a cyano-free compound A and a cyano-free compound B as initial raw materials, and crisaborole is prepared through the reaction steps of nucleophilic coupling reaction, carbonyl protection, hydroxyl protection, borylation, deprotection, cyanation and the like. According to the preparation method, the traditional synthesis mode is changed, and the construction of cyano groups is finally carried out, so that the problem of side reaction caused by cyano groups in the borylation process is avoided. The preparation method is simple and convenient to operate, mild in reaction condition and relatively high in overall yield, avoids the use of a transition metal catalyst, is very suitable for being applied to medicine production, and has a relatively good application prospect.

The application belongs to the technical field of pharmaceutical chemistry, and particularly relates to a preparation method of crizanlizumab, which comprises three steps: S1, preparing compound III; S2, preparing compound V; and S3, preparing crizanlizumab. The application not only solves the side reaction, atom waste and yield loss caused by the protecting group, and improves the atom economy and reaction selectivity, but also realizes high-selectivity C-H bond boronation, completely discards the noble metal palladium catalyst, and eliminates heavy metal pollution from the source, conforms to the development trend of green pharmacy, and further solves the bottleneck problems of high cost, high risk and long steps in the industrial production of crizanlizumab, and provides strong safety guarantee for industrial production.

The invention provides a preparation method of crizotinib, and belongs to the technical field of medicine synthesis. 5-bromo-2-nitropyridine-3-alcohol is adopted as a raw material to prepare an intermediate 4-(4-(5-hydroxy-6-nitropyridine-3-yl) 1H-pyrazol-1-yl) piperidine-1-carboxylic acid tert-butyl ester, namely a compound III, and then the compound III reacts with (S)-1-(2, 6-dichloro-3-fluorophenyl) ethanol to obtain a key intermediate (R)-4-[4-[6-nitro-5-[1-(2, 6-dichloro-3-fluorophenyl) ethyl]-4-[4-[6-nitro-5-[1-(2, 6-dichloro-3-fluorophenyl)-4-(4-(5-hydroxy-6-nitropyridine-3-yl) piperidine-1-carboxylic acid tert-butyl ester]. The preparation method comprises the following steps: carrying out catalytic reduction and deprotection reaction on a key intermediate to obtain a target product compound VII, namely crizotinib, by taking 2, 6-dichloro-3-fluorophenyl) ethyoxyl] pyridine-3-yl]-1H-pyrazol-1-yl] piperidine-1-carboxylic acid tert-butyl ester as a compound V, and carrying out catalytic reduction and deprotection reaction on the key intermediate. The crizotinib synthesis method provided by the invention is short in step, simple and easy to control, time cost and material cost are saved, and the crizotinib synthesis method has remarkable advantages and industrial practical value.