Process for preparing a cis oxabicyclo olefinic acid and ester from an oxabicyclo pyranol
US5245055A · kind A · utility
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18Claims
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Key dates
| Filing date | Dec 18, 1990 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Dec 18, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P41/004
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A compound having the structure ##STR1## is reacted with Ph.sub.3 P.dbd.CH(CH.sub.2).sub.3 Y wherein Y is --CO.sub.2 .sup..crclbar. M.sup..sym. or --C.tbd.N to form ##STR2## which is aminated and esterified to form ##STR3## which may be used to form [1S-[1.alpha.,2.alpha.(Z),3.alpha., 4.alpha.[[-7-[3-[[[[1-oxoheptyl) -amino]acetyl]amino]methyl]-7-oxabicyclo-[2.2.1]-hept-2-yl]-5-heptenoic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.