| Literature DB >> 29508256 |
Henki Rotinsulu1,2, Hiroyuki Yamazaki3, Shino Sugai1, Natsuki Iwakura1, Defny S Wewengkang1,2, Deiske A Sumilat1,4, Michio Namikoshi1.
Abstract
Cladosporamide A (1), a new protein tyrosine phosphatase (PTP) 1B inhibitor, was isolated together with a known prenylated flavanone derivative (2) from the culture broth of an Indonesian marine sponge-derived Cladosporium sp. TPU1507 by solvent extraction, ODS column chromatography, and preparative HPLC (ODS). The structure of 1 was elucidated based on 1D and 2D NMR data. Compound 1 modestly inhibited PTP1B and T-cell PTP (TCPTP) activities with IC50 values of 48 and 54 μM, respectively. The inhibitory activity of 2 against PTP1B (IC50 = 11 μM) was approximately 2-fold stronger than that against TCPTP (IC50 = 27 μM).Entities:
Keywords: Cladosporamide A; Cladosporium sp.; Inhibitor; Marine sponge-derived fungus; Protein tyrosine phosphatase 1B
Mesh:
Substances:
Year: 2018 PMID: 29508256 DOI: 10.1007/s11418-018-1193-y
Source DB: PubMed Journal: J Nat Med ISSN: 1340-3443 Impact factor: 2.343