Absolute stereochemistries and total synthesis of (+)-arisugacins A and B, potent, orally bioactive and selective inhibitors of acetylcholinesterase - Toshiaki, S; Masaki, H; Kenichiro, N; Tatsuya, S; Yoshihiro, H; Kazuhiko, O; Isao, K; Satoshi, O (Tetrahedron, 2004)