摘要:
The present invention relates to a process for the preparation of optically pure ( R) -1-aminoindan by a diastereomeric resolution of 1-aminoindan using N-acetyl-L-glutamic acid as a resolving agent. In another aspect, the invention relates to diastereomeric salts of (R) -1-aminoindan with N-acetyl-L-glutamic acid, and their use in the process for the preparation of rasagiline.
摘要:
The present invention relates to a process for the preparation of aqueous solutions of [1- 13 C]-hyperpolarized carboxylate containing molecules of diagnostic interest that comprises parahydrogenating with molecular parahydrogen unsaturated alkenyl or alkynyl esters of the concerned 13 C- carboxylate molecules.
摘要:
Disclosed are compounds of Formula (I): (I). Also disclosed are methods of using such compounds as immunomodulators, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating, preventing, or slowing the progression of virological diseases or disorders and cancer.
摘要:
The invention relates to a method or process for the chemical manufacture of depsipeptides of the formula I employing an aldehyde acetal intermediate Formula (I), wherein the symbols have the meaning defined in the description, to new intermediates and their manufacture, as well as related invention embodiments.
摘要:
A process of producing N -acyl amino acid based surfactants of Formula (I), wherein, R is selected from C6 to C22 alkyl group, R 1 is selected from H, C1 to C4 alkyl, R 2 is selected from all groups on a carbon of natural amino acids, R 3 is selected from COOX, CH 2 -SO 3 X, X is selected from Li + , Na + or K + ; said process comprising steps of A) preparing fatty acid chlorides by halogenating fatty acids with either phosgene or thionyl chloride in the presence of catalytic amount of same or other N -acyl amino acid surfactant of Formula (I) or anhydrides of same surfactant, Formula (II), wherein, R = C6 to C22 alkyl group, R 1 = H, C1 to C4 alkyl, R 2 = all groups on α carbon of natural amino acids, n = 0 to 4, X = C, SO and B) reacting fatty acid chloride of step (A) with an amino acid in the presence of a base under typical aqueous Schotten Baumann conditions such that said process does not employ a step of purification.
摘要:
A flavour composition comprising compound of formula (I) and edible salts thereof, wherein R1 is an alkyl residue containing 6 to 20 carbon atoms, or an alkene residue containing from 9 to 25 carbon atoms with 1 to 6 double bonds, R1 together with the carbonyl group to which it is attached is a residue of a carboxylic acid; X is OH or NH2; and P is 0 or 1.
摘要:
A flavour composition comprising a compound of formula (I) edible salts thereof, wherein R 1 is an alkyl residue containing 6 to 20 carbon atoms, or an alkene residue containing from 9 to 25 carbon atoms with 1 to 6 double bonds, R 1 together with the carbonyl group to which it is attached is a residue of a carboxylic acid.