Process for the preparation of S-alkylcysteines

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07C32104

Patent

active

061472573

ABSTRACT:
A process for the preparation of S-alkylcysteines of formula ##STR1## wherein R is a lower or branched C.sub.1 -C.sub.4 alkyl group; by S-alkylation of cysteines with dialkylcarbonates.

REFERENCES:
patent: 5644028 (1997-07-01), Mimoto et al.
Vincent du Vincent, "The Oxidation of the Sulfur of Homocystine, Methionine, and S-Methylcysteine in the Animal Body" Dept. of Biochemistry, George Washington University, 1934, pp. 481-488.
Dah-Ren Hwang et al., "Total Synthesis of (+)-Sparsomycin. Approaches Using Cysteine and Serine Inversion .sup.1," American Chemical Society1985, pp. 1254-1271.
Marvin D. Armstrong, "Thioether Derivatives of Cysteine and Homocystein, "University of Utah College of Medicine, pp. 749-753.
Max Frankel et al., "Synthesis of Poly-S-Alkyl-L-cysteines". pp. 1390-1393.
Kiyoshi Yamauchi, "Milellar Methylating Agents:"Long-chain-alkyl dimethyl Sulphonium Iodides, J. Chemical Society, pp. 1941-1942.
Kiyoshi Yamauchi, "Action of Trimethyl Phosphate on Amino Acids. Selective Methylatin of 1-Ceysteine and Related Compounds", Pergamon Press., 1977, No. 13, pp. 1199-1202.
Chemical Abstracts 6834 : 1955.
Chemical Abstracts 6834 : 1955.
Chemical Abstracts 85 : 99178d, 1976.
Chemical Abstracts. 124 176949j 1996.
Chemical Abstracts. 123 : 11549x 1996.
Chemical Abstracts 126 : 334437p 1997.
Chemical Abstracts 106: 169054p 1987.
H. D. Brown et al., "The antituberculous activity of some ethylmercapto compounds". J. Amer. Chem. Compounds". J. Amer. Chem. Soc.vol. 76, 1954, p 3860.
Database CAPLUS on STN, Acc. No. 1987:49338, Lissel et al., `Use of dimethyul carbonate as a methylating agent under phase treansfer-catalyzed conditions.`Synthesis (1986), pp382-383 (abstract).
Database CAPLUS on STN, Acc. No. 1992:407569, SELVA ET AL., `Esters and ortho esters as lkylating agents at high temperature. Applications to continuous-flow processes`.J. Chem. Soc., Perkin Trans. 2 (1992), (4), pp519-522 (abstract).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for the preparation of S-alkylcysteines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of S-alkylcysteines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of S-alkylcysteines will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2066876

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.