ChemInform Abstract: Efficient Synthesis of (‐)‐Hanishin (Ic), (‐)‐Longamide B (Ia), and (‐)‐Longamide B Methyl Ester (Ib) Through Piperazinone Formation from 1, 2‐Cyclic Sulfamidates. Issue 28 (June 2016) - Shiokawa, Zenyu; Inuki, Shinsuke; Fukase, Koichi; Fujimoto, Yukari