Boc-O-tert-butyl-D-threonine

Boc-Dap(Boc)-OH (dicyclohexylammonium) salt

(3R,4S)-1-Benzoyl-3-(1-ethoxyethoxy)-4-phenylazetidin-2-one

(3R,4S)-TERT-BUTYL 3-(1-ETHOXYETHOXY)-2-OXO-4-PHENYLAZETIDINE-1-CARBOXYLATE

Ginkgolic acid (13:0)