METHOD OF PRODUCING BERAPROST
First Claim
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1. A process for preparing a compound of the following formula:
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Abstract
An improved method is described for making single isomers of synthetic benzoprostacyclin analogue compounds, in particular the pharmacologically active 314-d isomer of beraprost. In contrast to the prior art, the method is stereoselective and requires fewer steps than the known methods for making these compounds.
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Citations
20 Claims
- 1. A process for preparing a compound of the following formula:
- 7. The process of for preparing the stereoselectively produced isomeric compound of the following formula:
- 11. A process for preparing a compound of the following formula:
- 13. A compound represented by the formula:
- 15. A process for preparing a substantially pure compound of the following formula:
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