Shun SaitoTakahiro FujimakiWatanalai PanbangredYasuhiro IgarashiMasaya ImotoKeio UniversityMahidol UniversityToyama Prefectural University2018-12-112019-03-142018-12-112019-03-142016-02-18Angewandte Chemie - International Edition. Vol.55, No.8 (2016), 2728-273215213773143378512-s2.0-84958729571https://repository.li.mahidol.ac.th/handle/20.500.14594/43401© 2016 Wiley-VCH Verlag GmbH & Co. KGaA. Prostate cancer is treated with androgen receptor (AR) antagonists but most patients experience disease progression after long-term treatment with these compounds. Therefore, new AR antagonists are required for patient follow-up treatment. In the course of screening for a new AR antagonist, we isolated the novel compounds antarlides A-E (1-5) from Streptomyces sp. BB47. Antarlides are mutually isomeric with respect to the double bond and have a 22-membered-ring macrocyclic structure. The full stereostructure of 1 was established by chemical modifications, including methanolysis, the Trost method, acetonide formation, and the PGME method. 1-5 inhibited the binding of androgen to ARs in vitro. In addition, 2 inhibited the transcriptional activity of not only wild-type AR but also mutant ARs, which are seen in patients with acquired resistance to clinically used AR antagonists. Therefore, antarlides are a potent new generation of AR antagonists that overcome resistance.Mahidol UniversityChemical EngineeringChemistryArticleSCOPUS10.1002/anie.201510079