Zobrazeno 1 - 10 of 22 pro vyhledávání: '"R A, PARTYKA"'
1
Synthesis and in vitro antibacterial activity of new semi-synthetic noviosylcoumarin antibiotics: chemical modification at the C-3′ ester
Autor: Yasutsugu Ueda, Joan Fung-Tomc, Julia M. Chuang, R. A. Partyka
Publikováno v: Bioorganic & Medicinal Chemistry Letters. 4:1623-1628
A synthetic procedure to introduce a variety of ester groups at the C-3′ position of the noviosylcoumarin antibiotics has been developed. Several new semi-synthetic noviosylcoumarins having unique ester groups at the C-3′ position by this method
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::354973c5640ab21aa2faf0e5b3b9ca02
https://doi.org/10.1016/s0960-894x(01)80578-3
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2
Enzymic preparation of (3R-cis)-3-(acetyloxy)-4-phenyl-2-azetidinone: a taxol side-chain synthon
Autor: R N, Patel, A, Banerjee, R Y, Ko, J M, Howell, W S, Li, F T, Comezoglu, R A, Partyka, F T, Szarka
Publikováno v: Biotechnology and applied biochemistry. 20(1)
A key chiral intermediate [(3R-cis)-3-(acetyloxy)-4-phenyl-2-azetidinone (2)] for the semi-synthesis of paclitaxel (taxol; 5), an anti-cancer compound, was prepared by an enzymic process. The stereoselective enzymic hydrolysis of cis-3-(acetyloxy)-4-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::fe5082bacc02b7d147ace19aaad0eafa
https://pubmed.ncbi.nlm.nih.gov/7917063
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4
Influence of late blight and foliar fungicides on yield and specific gravity of potatoes
Autor: R. C. Cetas, S. S. Leach, R. E. Partyka, F. E. Manzer, Donald Merriam
Publikováno v: American Potato Journal. 42:247-252
In fungicide trials conducted over several years in Maine and Long Island, New York, yield and specific gravity measurements on Katahdin and Green Mountain potatoes were found to be strongly influenced by the extent of defoliation by the late blight
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bac986087094a38a5ac677dc1c38a1a
https://doi.org/10.1007/bf02861152
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5
A practical synthesis of mitomycin A and its analogs
Autor: Terrence W. Doyle, D. M. Vyas, D. Benigni, R. A. Partyka
Publikováno v: The Journal of Organic Chemistry. 51:4307-4309
Synthese par O-alkylation par des alkyl-3 p-tolyl-1 triazenes de l'hydroxy-7 methoxy-9a mitosane
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1bea39b4a463be31f46b1299c1dc0694
https://doi.org/10.1021/jo00372a043
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7
A synthesis of isothiazoles and pyrimidinesviaa vilsmeier-haack reaction
Autor: R. R. Crenshaw, R. A. Partyka
Publikováno v: Journal of Heterocyclic Chemistry. 7:871-873
A new synthesis of isothiazoles is reported which involves the reaction of Vilsmeier salts of N,N-dimethylamides with enamino nitriles, and treatment of the intermediates successively with sodium hydrosulfide and iodine. 4-Isothiazolecarbonitriles pr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3bb27f4b28ab3c7b765cfa518c04d8b0
https://doi.org/10.1002/jhet.5570070419
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