摘要:
An ethyl acetate extract of Opuntia ficus-indica and compounds isolated therefrom for preventing and treating brain diseases such as Alzheimer's disease, stroke and Parkinson's disease, cell and tissue damage caused by ischemia, or cardiovascular system disease such as myocardial infarction.
摘要:
Intermediate compounds represented as formula (I) useful for the synthesis of 16-phenoxy-prostatrienoic acid derivatives and a preparing method thereof are disclosed. ##STR1## wherein R is tetrahydropyranyl, tetrahydrofuranyl, 2-ethoxyethyl, 3-t-butyldimethylsilyl triisopropylsilyl or triethylsilyl group; R.sup.1 and R.sup.2 are independently hydrogen or ester-forming group; P is hydrogen, trimethylsilyl or tri-n-butyltin; and wavy line means epistereoisomeric mixture.
摘要:
A 3-ammoniopropenyl cephalosporin of the following formula (I): ##STR1## wherein P is hydroxylated alicyclic or aliphatic amines such as meso-3,4-dihydroxy-1-methylpyrrolidine, (3S,4S)-3,4-dihydroxy-1-methylpyrrolidine, (3R,4R)-3,4-dihydroxy-1-methylpyrrolidine, rac-3,4-trans-dihydroxy-1-methylpyrrlidine, (2S,4R)-4-hydroxy-1-methyl-2-pyrrolidinemethanol, N-methyl-bis(2-hydroxyethyl)amine, 3,4-cis-dihydroxy-1-methylpiperidine, 3,4-trans-dihydroxypiperidine, 4-hydroxy-1-methylpiperidine, 2-hydroxymethyl-1-methylpiperidine, or tropine, or a pharmaceutically acceptable salt thereof, exhibits good anti-bacterial activities against a wide variety of Gram-positive and Gram-negative bacteria; and a process for the preparation thereof.
摘要:
Quaternary ammoniocephalosporins of formula(I) wherein Q.dbd.CH or N, P.dbd.hydroxylated amine or hydroxylated heterocyclylamines including N-methyl-bis(2-hydroxyethyl)amine, rac-3,4-trans-dihydroxy-1-methylpyrrolidine, (3S, 4S)-3,4-dihydroxy-1-methylpyrrolidine, (3R,4R)-3,4-dihydroxy-1-methylpyrrolidine, meso-3,4-dihydorcy-1-methylpyrrolidine, (2S, 4R)-4-hydroxy-1-methyl-2-pyrrolidinemethanol 3,4-cis-dihydroxy-1-methylpiperidine, 3,4-trans-dihydroxy-1-methylpiperidine, or tropine, and preparation methods are disclosed. ##STR1##
摘要:
Intermediate compounds represented as formula (I) useful for the synthesis of 16-phenoxy-prostatrienoic acid derivatives and a preparing method thereof are disclosed. ##STR1## wherein R is tetrahydropyranyl, tetrahydrofuranyl, 2-ethoxyethyl, t-butyldimethylsilyl, triisopropylsilyl or triethylsilyl group; R.sup.1 and R.sup.2 are independently hydrogen or ester-forming group; P is hydrogen, trimethylsilyl or tri-n-butyltin; and wavy line means epi-stereoisomeric mixture.
摘要:
A 3-ammoniopropenyl cephalosporin of the following formula (I): ##STR1## wherein P is hydroxylated alicyclic or aliphatic amines such as meso-3,4-dihydroxy-1-methylpyrrolidine, (3S,4S)-3,4-dihydroxy-1-methylpyrrolidine, (3R,4R)-3,4-dihydroxy-1-methylpyrrolidine, rac-3,4-trans-dihydroxy-1-methylpyrrlidine, (2S,4R)-4-hydroxy-1-methyl-2-pyrrolidinemethanol, N-methyl-bis(2-hydroxyethyl)amine, 3,4-cis-dihydroxy-1-methylpiperidine, 3,4-trans-dihydroxypiperidine, 4-hydroxy-1-methylpiperidine, 2-hydroxymethyl-1-methylpiperidine, or tropine, or a pharmaceutically acceptable salt thereof, exhibits good anti-bacterial activities against a wide variety of Gram-positive and Gram-negative bacteria; and a process for the preparation thereof.
摘要:
The present invention relates to 3,4-dihydroquinazoline derivatives as T-type calcium channel blockers and a method of preparing the same. The present invention further relates to a composition comprising the same. The composition comprising the 3,4-dihydroquinazoline derivatives of the present invention can be effectively used for preventing and treating angina pectoris, high blood pressure, myocardial disease, pain and epilepsy by blocking the T-type calcium channel.
摘要:
Provided are a magnetic sheet for use in a radio frequency identification (RFID) antenna, an RFID antenna including the magnetic sheet, and a method of manufacturing the magnetic sheet, in which the magnetic sheet includes an amorphous alloy selected from the group consisting of Fe—Si—B, Fe—Si—B—Cu—Nb, Fe—Zr—B and Co—Fe—Si—B. The magnetic sheet is made by laminating amorphous alloy ribbons made of an amorphous alloy between magnetic sheet layers formed of alloy powder including at least one amorphous alloy and then compression-molding the amorphous alloy ribbons, to thereby control microcrack of the amorphous alloy ribbons and enhance characteristic of an end-product. The magnetic sheet is also thin, and has an excellent magnetic permeability, and a simple manufacturing process.
摘要:
The present invention relates to 3,4-dihydroquinazoline derivatives as T-type calcium channel blockers and a method of preparing the same. The present invention further relates to a composition comprising the same. The composition comprising the 3,4-dihydroquinazoline derivatives of the present invention can be effectively used for preventing and treating angina pectoris, high blood pressure, myocardial disease, pain and epilepsy by blocking the T-type calcium channel.