Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Merck and Co Inc
Original Assignee
Merck and Co Inc
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Publication date
Priority claimed from GB329571Aexternal-prioritypatent/GB1350772A/en
Application filed by Merck and Co IncfiledCriticalMerck and Co Inc
Publication of ES399220A1publicationCriticalpatent/ES399220A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A process for obtaining alcohol carbamates, especially applicable to the preparation of unsubstituted 3-carbamoyloxymethylcephalosporins, which consists of reacting any alcohol with a bromosulfonyl isocyanate or a chlorosulfonyl isocyanate and hydrolyzing the resulting reaction product, in such a way that when applied to a compound of the 3-hydroxymethylcephalosporin type of general formula: **(See formula)** or the corresponding compound Δ 2, where R'is hydrogen or an acyl radical and R1 is hydrogen or methoxy, or a salt or ester thereof, leads to the preferred unsubstituted 3-carbamoyloxymethylcephalosporins. (Machine-translation by Google Translate, not legally binding)
ES399220A1971-01-271972-01-26A procedure for the obtaining of alcohol carbamates. (Machine-translation by Google Translate, not legally binding)
ExpiredES399220A1
(en)
Procedure for obtaining a new derivative of n - ((1-ethyl-2-pirrolidinyl) -metil) -2-metoxy-5-sulfamoibenzamide. (Machine-translation by Google Translate, not legally binding)