C(2)-symmetric chiral pentacyclic guanidine: a phase-transfer catalyst for the asymmetric alkylation of tert-butyl glycinate Schiff base.
Institute of Molecular and Cellular Biosciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan.
Tetsuya
T
Kita
Angelina
A
Georgieva
Yuichi
Y
Hashimoto
Tadashi
T
Nakata
Kazuo
K
Nagasawa