TC Publication, Tema 345U.S. Government Printing Office, 1970 |
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Página 48
... removing the pro- tecting group from the amino radical by hydrogenation under sufficiently mild conditions to avoid ... removal of the protecting group to form the free amico - substitute 3 penicillin is effected by ca- lytic ...
... removing the pro- tecting group from the amino radical by hydrogenation under sufficiently mild conditions to avoid ... removal of the protecting group to form the free amico - substitute 3 penicillin is effected by ca- lytic ...
Página 49
... removed by by- drogenation . The product in its free form can then be converted to any desired metal , ammonium or ... removed to leave a dry ethereal solution from which the product is easily isolated , preferably in the form of an ...
... removed by by- drogenation . The product in its free form can then be converted to any desired metal , ammonium or ... removed to leave a dry ethereal solution from which the product is easily isolated , preferably in the form of an ...
Página 50
... removed by extraction , as with toluene . ment of the sodium salt with strong aqueous acid con- verts the compound to the acid form , which can be converted to other amine salts , e.g. , procaine , by reac- tion with the emine base ...
... removed by extraction , as with toluene . ment of the sodium salt with strong aqueous acid con- verts the compound to the acid form , which can be converted to other amine salts , e.g. , procaine , by reac- tion with the emine base ...
Página 51
... removed . This removal can readity be achieved as indicated above by extracting the penicilins from the acidified fermenta- tion liquor by meers of an organic solvent , for example , butyl acetate , in which the penicillins are soluble ...
... removed . This removal can readity be achieved as indicated above by extracting the penicilins from the acidified fermenta- tion liquor by meers of an organic solvent , for example , butyl acetate , in which the penicillins are soluble ...
Página 53
... removed from the Dry Ice - acetone bath and stirrer for 1⁄2 hour between -10 ° C. and 0 ° C. and finally for hour at room temperature . The solution is diluted with 1 liter of ether and the aqueous layer which separates is removed . The ...
... removed from the Dry Ice - acetone bath and stirrer for 1⁄2 hour between -10 ° C. and 0 ° C. and finally for hour at room temperature . The solution is diluted with 1 liter of ether and the aqueous layer which separates is removed . The ...
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Términos y frases comunes
6-amino 6-aminopenicillanic acid acetone acylating added addition alleged American Home Products amine ampicillin antibiotic antitrust suit aqueous phase aqueous solution assaying Ayerst barium carbonate Beech-Nut Beecham Group Limited benzylpenicillin Bristol Laboratories Bristol-Myers Company butanol Canada carbonate carboxylic acid catalyst chemical chlorocarbonate cillin Clemm complainants Court Department of Justice E. R. Squibb Example fermentation filed filtered free acid Furazolidone Gram-negative Home Products Corporation hydrochloric acid hydrogen hydrogen at room importer of ampicillin investigation Jersey licensees manufacture method of competition million in 1968 mixture obtained Order be issued patent misuse penicillanic acid penicillin percent pharmaceutical phenylacetic acid plant PREPARATION President reaction respondent room temperature sales of ampicillin section 337 proceeding sell ampicillin semi-synthetic penicillins sodium bicarbonate sodium hydroxide sodium salt solvent Squibb and Sons stirred subsidiary Tariff Commission Temporary Exclusion Order tion triethylamine unfair act unfair method United vacuo Virgin Islands washed with water Wyeth Zenith Laboratories