Number | Date | Country |
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0095345 | May 1982 | EPX |
Entry |
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Sumoto, et al., J. Heterocyclic Chem. 18:413 (1981). |
Cheng, et al., J. Amer. Chem. Soc. 103:2090 (1981). |
LaLonde, et al., J. Org. Chem. 45:3664-3671 (1980). |
Buchs, et al., J. Org. Chem. 47:719 (1982). |