Number | Date | Country | Kind |
---|---|---|---|
21630/76 | May 1976 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3077496 | Julia | Feb 1963 | |
3299100 | Phillips | Jan 1967 | |
4000180 | Punja | Dec 1976 |
Entry |
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Krapcho, Tetrahedron Letters, pp. 957-960 (1973). |
Krapcho, Tetrahedron Letters, pp. 1091-1094 (1974). |