| Guanine, pyrazolo [3, 4-d] pyrimidine, and triazolo [4, 5-d]... 
 [Beauchamp, Lilia M.; Tuttle, Joel V.; Rodriguez, Martha E.; Sznaidman, Marcos L. Journal of Medicinal Chemistry, 1996 , vol. 39, # 4 p. 949 - 956]
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                            | Diethyl-1-magnesium chloride methanephosphonate, A novel gri... 
 [Coutrot, P.; Youssefi-Tabrizi, M.; Grison, C. Journal of Organometallic Chemistry, 1986 , vol. 316, p. 13 - 18]
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                            | Synthesis and biological evaluation of cyclopropyl analogs o... 
 [Dappen, Michael S.; Pellicciari, Roberto; Natalini, Benedetto; Monahan, Joseph B.; Chiorri, Claudio; Cordi, Alex A. Journal of Medicinal Chemistry, 1991 , vol. 34, # 1 p. 161 - 168]
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                            | Diethyl-1-magnesium chloride methanephosphonate, A novel gri... 
 [Coutrot, P.; Youssefi-Tabrizi, M.; Grison, C. Journal of Organometallic Chemistry, 1986 , vol. 316, p. 13 - 18]
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