红藻氨酸

(3S,3aS)-3-Hydroxymethyl-6-methyl-2,3,3a,4-tetrahydro-1H-cyclopenta[c]pyrrol-5-one

(7S,7aS,Z)-6-ethylidene-7-methyltetrahydropyrrolo[1,2-c]oxazol-3(1H)-one

(2S,3S,Z)-tert-butyl 4-ethylidene-2-(hydroxymethyl)-3-methylpyrrolidine-1-carboxylate

(2S,3S,Z)-1-(tert-butoxycarbonyl)-4-ethylidene-3-methylpyrrolidine-2-carboxylic acid