摘要:
A feeding device includes a material pipe, a first container, a second container and a constant-length linkage mechanism. The material pipe is configured for feeding a first material. The first container is configured for receiving the first material and supplying a timed amount of the first material to a first material feed port. The second container is configured for storing a second material and supplying the second material to a second material feed port. The constant-length linkage mechanism is connected to the first container and the second container. When the first container is actually supplying the first material to the first material feed port, the constant-length linkage mechanism allows the second container to supply the second material to the second material feed port simultaneously.
摘要:
A generic structure for the peptides of the present invention includes A-X-B-C, where C is a cargo moiety, the B portion includes basic amino acids, X is a cleavable linker sequence, and the A portion includes acidic amino acids. The intact structure is not significantly taken up by cells; however, upon extracellular cleavage of X, the B-C portion is taken up, delivering the cargo to targeted cells. Cargo may be, for example, a contrast agent for diagnostic imaging, a chemotherapeutic drug, or a radiation-sensitizer for therapy. Cleavage of X allows separation of A from B, unmasking the normal ability of the basic amino acids in B to drag cargo C into cells near the cleavage event. X is cleaved extracellularly, preferably under physiological conditions. D-amino acids are preferred for the A and B portions, to minimize immunogenicity and nonspecific cleavage by background peptidases or proteases.
摘要:
Provided are a G-CSF and water-soluble polymer conjugate, or a pharmaceutically acceptable salt thereof, comprising a water-soluble polymer, a protein, and a linking group; a method for preparing thereof; and a pharmaceutical composition comprising the same.
摘要:
The present disclosure generally relates to a process for converting a fused, tricyclic compound to a fused, tetracyclic compound that includes a furan ring therein. More particularly, the present disclosure related to a process for preparing a hydrocodone compound, or a compound structurally related thereto, and in particular (+)-hydrocodone, by subjecting a structurally corresponding sinomenine starting compound to a super acid-assisted furan ring closure reaction.
摘要:
The invention provides processes for the conversion of a 6-keto morphinan to a 6-hydroxy morphinan. In particular, the invention provides a stereoselective process for the conversion of a 6-keto morphinan to a 6-beta-hydroxy morphinan.
摘要:
The present invention provides processes for the demethylation of an N-methyl morphinan comprising a ketone functional group. In particular, the invention provides methods for the protection of the ketone functional group such that impurities are not generated during the demethylation of the N-methyl morphinan.
摘要:
The present invention provides processes for the preparation of saturated ketone morphinan compounds from a morphinan comprising an allyl alcohol ring moiety, wherein the final product has a low metal content. In particular, the invention provides processes that utilize isomerization reactions catalyzed by transition metal catalysts and the subsequent removal of the transition metal using metal scavengers.
摘要:
The invention provides novel pyrimidine and pyridine derivatives and pharmaceutical compositions thereof, and methods for using such compounds. For example, the pyrimidine and pyridine derivatives of the invention may be used to treat, ameliorate or prevent a condition which responds to inhibition of anaplastic lymphoma kinase (ALK) activity, focal adhesion kinase (FAK), zeta-chain-associated protein kinase 70 (ZAP-70), insulin-like growth factor (IGF-1R), or a combination thereof.
摘要:
The invention relates to an electronic device chassis, comprising at least an opening on the chassis and an inward guide apparatus along the opening; the guide apparatus comprises at least a first guide part and a second guide part which are respectively a concave slide and a convex slide, to guide modules in at least two different structural specifications into the electronic device to establish electrical connection with the electronic device. The module is inserted through the opening along the slides, and is fitted to the corresponding connector on the mainboard. The invention can solve the problem that traditional switch devices can not support different transmission speeds and transmission modes between networks. With the slides, a device can be compatible with data transmission modules with different speeds and different interface forms. Functions of a device are enhanced and device configuration is increased; in addition, the structure is compact, which flexibly meets changing market demands for a device. The invention also relates to a network switch device with the chassis.