Enantioselective Biginelli Reaction of Aliphatic Aldehydes Catalyzed by a Chiral Phosphoric Acid: A Key Step in the Synthesis of the Bicyclic Guanidine Core of Crambescin A and Batzelladine A
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Jisheng Chen | C. Fan | Zhenhua Gao | Yongbiao Guo | Hui‐zhen Yu | Gui-Qing Huang | Chuanpin Zou | Junchen Li | Yongpeng Huang