Method for producing intermediates useful in the preparation of 7-oxabicycloheptane prostaglandin derivatives
CA 1214175 A · Owner: Squibb (E.R.) & Sons, Inc. · Inventors: Das, Jagabandhu; Haslanger, Martin F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of the compound (1a,2B,3B,4a)-cis-exo-7-oxabicyclo-2.2.1heptane 2,3dimethanol carbonate of the formula, by cyclizing a compound of the formula The prepared compound is useful as an intermediate in the synthesis of a compound of the formula wherein A is OCOCl, O-protecting group or CN and B is OH or OCOO alkyl. The latter compounds are useful in the preparation of 7-oxabicycloheptane prostaglandin derivatives which are useful, for example, in the treatment of thrombolytic disease, such as coronary or cerebral thromboses.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 2003.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.