Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Shizuaki Murata and Wolfgang Pfleiderer and Sadao Matsuura and Takashi Sugimoto,Synthesis of asperopterin-B and some analogues,Tetrahedron Letters,0040-4039,Elsevier BV,1986-01-01,27,,4179-4180,https://cir.nii.ac.jp/crid/1871991017595482880,https://doi.org/10.1016/s0040-4039(00)84942-4