Synthetic studies on dragmacidin D: synthesis and assembly of three fragments towards an advanced intermediate

M Oikawa, M Ikoma, M Sasaki

Index: Oikawa, Masato; Ikoma, Minoru; Sasaki, Makoto European Journal of Organic Chemistry, 2011 , # 24 p. 4654 - 4666

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Citation Number: 4

Abstract

Abstract We report herein the approach to the key advanced intermediate in the synthesis of the bioactive marine natural product dragmacidin D. By employing a modular synthesis strategy of three fragments (5, 7, and 8), the advanced intermediate 3 has been successfully synthesized in 2.5% yield over 15 steps by starting from nitrotoluene 20. The synthesis also involves sequential cross-coupling reactions, namely Sonogashira and Suzuki–Miyaura ...