ChemInform Abstract: Isolation, Structure Elucidation, and Total Synthesis of Tryptopeptins A and B, New TGF‐β Signaling Modulators from Streptomyces sp. Issue 23 (June 2015) - Tsunematsu, Yuta; Nishimura, Shinichi; Hattori, Akira; Oishi, Shinya; Fujii, Nobutaka; Kakeya, Hideaki