1239985-34-2Relevant academic research and scientific papers
The total synthesis and structure-activity relationships of a highly cytotoxic depsipeptide kulokekahilide-2 and its analogs
Takada, Yuuki,Umehara, Masahiro,Katsumata, Ryosuke,Nakao, Yoichi,Kimura, Junji
supporting information; experimental part, p. 659 - 669 (2012/01/30)
We successfully completed the total synthesis of kulokekahilide-2, a cytotoxic depsipeptide from the Cephalaspiedean mollusk Phillinopsis speciosa. We have revised the absolute stereochemistry of kulokekahilide-2 to 21-l-Ala, 24-d-MePhe, 37-l-Ile, 43-d-Ala, 15-d-Hica, and 5S,6S,7S-Dtda. We also investigated the cause of the mis-assignment of the configuration in the originally proposed kulokekahilide-2 and concluded that methanolysis using MeONa caused partial racemization, which led to the mis-assignment. The structure-activity relationships of kulokekahilide-2 and its analogs indicate the importance of an l-amino acid at position 21.
