1John D, Buynak, M Narayana R, et al. Useful chemistry of 3-([-methylethylidene)-4-acetoxy- 2-azetidinone: a formal synthesis of (+)-asparenomycin C [J]. J. Org. Chem., 1985, 50: 4245-4252.
2Tesuo M, Yulio S, Toshihiko H, et al. Systhesis and in vitro activity of new carbapenem RS-533 [J]. The Journal of Antibiotics, 1983, 36(8): 1034-1039.
3YutakaN, Tadafumi K, Tetsuya Y, et al. Practical large-scale synthesis of the 2-amirtomethylpyrrolidin -4-yhhio-containing side chain of the novel carbapenem antibiotic doripenem [J]. Organic Process Research & Development, 2003, 7: 649-654.
4Huw M L, Davies J H, Craig, T. Synthesis and chemistry of donor/ acceptor-substituted cyclopropenes [J]. J. Org. Chem., 1995, 60: 7529-7534.
5Kazuhiko K, Masahiko S, Toom K, et al. 2-Substituted2,3-dihydro-4H-1,3-benzoxazin -4-ones: a novel auxiliary for stereoselective synthesis of 1β-methylcarbapenems [J]. J. Org. Chem., 1995, 60: 1096-1097.
6Tetsuo M, Yukio S, Toshihiko H, et al. Carbapenen compounds, and compositions containing them: US, 4552873 [P]. 1985-11-12.
7Kahan F M, Kropp H. Combination of 2- substituted earbapenens with dipeptidase lnhibitors: EP,161546 [P].1985-11-21.
8Yoshida A, Oda K. Process for preparing carbapenen and penem compounds and new compounds involved in that process: EP, 587436 [P]. 1994-03-16.
9Kondaiah G C M, Amarnath R L, Srihari B K, et al.Boric acid: an efficient and environmentally benign catalyst for transesterification of ethyl acetoacetate [J]. Tetrahedron Lett., 2008, 49: 106-109.
10Ratcliffe W, Salzmann T N, Christensen B G. Anovel synthesis of' the carbapen-2-era ring system [J]. Tetrahedron Lett., 1980, 21:31-34.
