Novel synthesis of pyridazino [4, 5-b][1, 4] oxazin-3, 8-dio...
[Cho, Su-Dong; Song, Sang-Yong; Park, Yong-Dae; Kim, Jeum-Jong; Joo, Woo-Hong; Shiro, Motoo; Falck; Shin, Dong-Soo; Yoon, Yong-Jin Tetrahedron Letters, 2003 , vol. 44, # 50 p. 8995 - 8998]
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