This is a divisional of application Ser. No. 230,915 filed Feb. 2, 1981, now U.S. Pat. No. 4,352,757.
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Corey et al., Tetrahedron Letters, vol. 21, pp. 3463-3466, 4243-4246, (1980). |
Baker et al., Tetrahedron Letters, vol. 21, pp. 4123-4126, (1980). |
Hammarstrom et al., Biochem. Biophys. Res. Commun., vol. 92 (3), Feb. 12, 1980, pp. 946-953. |
Corey et al., Jour. Am. Chem. Soc., vol. 102(4), Feb. 13, 1980, pp. 1436-1439. |
Number | Date | Country | |
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Parent | 230915 | Feb 1981 |