Pelizzi G, Ciabatti R, Padova G, Tarzia G. X-ray structure determination of mexiprostil, a new gastroprotective 16-methoxy-16-methyl-PGE1 analogue.
PROSTAGLANDINS 1988;
35:639-49. [PMID:
3247474 DOI:
10.1016/0090-6980(88)90037-8]
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Abstract
Mexiprostil is a new gastroprotective 16-methoxy-16-methyl-PGE1 methyl ester. To assign the absolute configuration at C-15, a crystalline high-melting C-1 ester analog 5 11,15-dihydroxy-16-methoxy-16-methyl-9-oxoprost-13-en-1-oic acid 4-(4-bromobenzamide)phenyl ester (15R, 16R) was prepared and submitted to single crystal X-ray analysis. Since C-8, C-11, C-12 and C-16 are shown to have R configurations, the X-ray diffraction results established that the configuration at C-15 is also R.
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