Patent classifications
C07D207/27
Method for preparing levetiracetam
A preparing method for high-purity levetiracetam, comprising: adjusting the pH of an extracted aqueous layer obtained by dissociating (S)-α-ethyl-2-oxo-1-pyrrolidineacetic acid (R)-methylbenzylamine salt to 5-9; removing water; adding an organic solvent to form a solution and then performing an esterification reaction with ethyl chloroformate or methylchlorofonmate; and carrying out an ammonolysis reaction to obtain the levetiracetam. The method simplifies production process, increases yield, reduces or even avoids the use of triethylamine in the esterification process, and reduces the emission of a great amount of three wastes.
ANTIVIRAL COMPOUNDS
The present invention relates to novel compounds of general Formula II:
##STR00001##
wherein the groups X, and R.sup.1 to R.sup.4 have the meanings given in the description, to a process for preparing these compounds and to their use for treating, preventing or ameliorating viral infections and diseases which are associated with PLA2G16.
ANTIVIRAL COMPOUNDS
The present invention relates to novel compounds of general Formula II:
##STR00001##
wherein the groups X, and R.sup.1 to R.sup.4 have the meanings given in the description, to a process for preparing these compounds and to their use for treating, preventing or ameliorating viral infections and diseases which are associated with PLA2G16.
Cytotoxic Actin-Targeting Compounds
A class of compounds useful in pharmaceutical compositions and methods for treating or preventing cancer is described. Analogs of Mycalolide B have been prepared and tested in breast and ovarian cancer cell lines. The compounds show utility for inhibition of survival and proliferation of tumor cells. The compounds have been shown to disrupt actin.
Cytotoxic Actin-Targeting Compounds
A class of compounds useful in pharmaceutical compositions and methods for treating or preventing cancer is described. Analogs of Mycalolide B have been prepared and tested in breast and ovarian cancer cell lines. The compounds show utility for inhibition of survival and proliferation of tumor cells. The compounds have been shown to disrupt actin.
QUATERNARY HETEROATOM CONTAINING COMPOUNDS
The invention provides heterocyclic compounds with quaternary centers and methods of preparing compounds. Methods include the method for the preparation of a compound of Formula (II):
##STR00001##
comprising treating a compound of Formula (I):
##STR00002##
with a transition metal catalyst and under alkylation conditions as valence and stability permit.
QUATERNARY HETEROATOM CONTAINING COMPOUNDS
The invention provides heterocyclic compounds with quaternary centers and methods of preparing compounds. Methods include the method for the preparation of a compound of Formula (II):
##STR00001##
comprising treating a compound of Formula (I):
##STR00002##
with a transition metal catalyst and under alkylation conditions as valence and stability permit.
Necrosis inhibitors
The invention provides amides that inhibit cellular necrosis and/or human receptor interacting protein 1 kinase (RIP1), including corresponding sulfonamides, and pharmaceutically acceptable salts, hydrates and stereoisomers thereof. The compounds are employed in pharmaceutical compositions, and methods of making and use, including treating a person in need thereof with an effective amount of the compound or composition, and detecting a resultant improvement in the person's health or condition.
Necrosis inhibitors
The invention provides amides that inhibit cellular necrosis and/or human receptor interacting protein 1 kinase (RIP1), including corresponding sulfonamides, and pharmaceutically acceptable salts, hydrates and stereoisomers thereof. The compounds are employed in pharmaceutical compositions, and methods of making and use, including treating a person in need thereof with an effective amount of the compound or composition, and detecting a resultant improvement in the person's health or condition.
SSAO inhibitors and use thereof
The application relates to a compound of Formula (I′) or (I): ##STR00001##
or a pharmaceutically acceptable salt, hydrate, solvate, prodrug, stereoisomer, or tautomer thereof, which modulates the activity of SSAO, a pharmaceutical composition comprising a compound of Formula (I′) or (I), and a method of treating or preventing a disease in which SSAO plays a role.