Cladosin C is one of the few known enaminotetramic acids, isolated from extracts of the deep sea fungus Cladosporium sphaerospermum. It was synthesised in ten steps and 14% overall yield by a late-stage amination of the corresponding 3-acyltetramic acid. This was obtained by a Dieckmann condensation of an N-β-ketoacylaminoester derived from dehydrovalinate and the thioester-terminated side chain containing
Cladosin C是从深海真菌球孢Cladosporium sphaerospermum
提取物中分离出来的少数几种已知的烯
氨基
四酸之一。它是通过十个步骤合成的,总产率为14%,是通过后期胺化相应的3-酰基四
甲酸而合成的。这是通过使衍生自脱氢缬
氨酸盐的N -β-酮酰基
氨基酯与含有源自聚-(R)-3-羟基
丁酸酯的立体异构中心的
硫酯末端的侧链进行的狄克曼缩合而获得的。