{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T16:12:42Z","timestamp":1788970362580,"version":"build-2803163510"},"reference-count":83,"publisher":"American Chemical Society (ACS)","issue":"35","license":[{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council (EPSRC)","doi-asserted-by":"crossref","award":["EP\/S024107\/1"],"award-info":[{"award-number":["EP\/S024107\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health (NIH)","doi-asserted-by":"crossref","award":["GM107550"],"award-info":[{"award-number":["GM107550"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health (NIH)","doi-asserted-by":"crossref","award":["S10 OD032266"],"award-info":[{"award-number":["S10 OD032266"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation (NSF)","doi-asserted-by":"crossref","award":["DMR-2011924"],"award-info":[{"award-number":["DMR-2011924"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,9,9]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The discovery of structurally novel natural products remains central to expanding biologically relevant chemical space, particularly within underexplored marine metabolite classes. Herein, we report the discovery and complete structural elucidation of canalesolide A, a new polyhydroxylated macrolide isolated from the marine cyanobacterium Okeania sp. The compound was identified through an integrated workflow combining phenotypic screening against Trypanosoma brucei and LC-MS\/MS-based molecular networking, enabling rapid prioritization of bioactive fractions and dereplication of known metabolite families. Spectroscopic analysis revealed that canalesolide A belongs to the bastimolide-related class of macrolides but exhibits a distinct structural architecture. Its structure was established by integrating ultrahigh-resolution NMR spectroscopy, empirical configurational analysis of polyol systems, targeted model compound synthesis, and controlled chemical degradation and derivatization. This combined strategy resolved stereochemical motifs that were inaccessible by direct analysis of the intact macrolide alone, providing a transferable approach for assigning densely oxygenated marine macrolides. Genome mining identified the putative biosynthetic gene cluster and proposed biosynthetic pathway for a bastimolide-related macrolide. Canalesolide A displays potent, low nanomolar antitrypanosomal activity against human-infective subspecies of T. brucei with rapid elimination of parasites within 1 h at 1 \u03bcM. Although moderate mammalian cytotoxicity was observed, preliminary in vivo efficacy\/toxicity studies in infected mice suggest a narrow therapeutic window highlighting the need for improved selectivity. This study expands the structural and biosynthetic diversity of polyhydroxylated macrolides and establishes a generalizable framework for resolving stereochemically complex natural products.<\/jats:p>","DOI":"10.1021\/jacs.6c11673","type":"journal-article","created":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T10:49:00Z","timestamp":1788259740000},"page":"38328-38343","source":"Crossref","is-referenced-by-count":0,"title":["Canalesolide A, a Structurally\nUnique Polyhydroxy\nMacrolide from the Marine Cyanobacterium\n                    <i>Okeania<\/i>\n                    sp.\nwith Potent Antitrypanosomal Activity"],"prefix":"10.1021","volume":"148","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9514-3327","authenticated-orcid":true,"given":"Thaiz R.","family":"Teixeira","sequence":"first","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3405-2875","authenticated-orcid":true,"given":"Byeol","family":"Ryu","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard","family":"Cox","sequence":"additional","affiliation":[{"name":"University of Bristol , , Cantock\u2019s Close , ,","place":["Bristol, U.K., BS8 1TS"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Max","family":"Deering","sequence":"additional","affiliation":[{"name":"University of Bristol , , Cantock\u2019s Close , ,","place":["Bristol, U.K., BS8 1TS"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brendan M.","family":"Duggan","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4012-4182","authenticated-orcid":true,"given":"M. Omar","family":"Din","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Evgenia","family":"Glukhov","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karol R.","family":"Francisco","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex J.","family":"Hu","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ai H.","family":"Banh","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Denise H.","family":"Tran","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2811-1274","authenticated-orcid":true,"given":"Lawrence J.","family":"Liu","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rob","family":"Knight","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]},{"name":"University of California San Diego , , , ,","place":["La Jolla, California, Unites States, 92093"]},{"name":"University of California San Diego , , , ,","place":["La Jolla, California, Unites States, 92093"]},{"name":"University of California San Diego , , , ,","place":["La Jolla, California, Unites States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6108-9000","authenticated-orcid":true,"given":"Lena","family":"Gerwick","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6678-8839","authenticated-orcid":true,"given":"Craig P.","family":"Butts","sequence":"additional","affiliation":[{"name":"University of Bristol , , Cantock\u2019s Close , ,","place":["Bristol, U.K., BS8 1TS"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0344-6430","authenticated-orcid":true,"given":"Varinder K.","family":"Aggarwal","sequence":"additional","affiliation":[{"name":"University of Bristol , , Cantock\u2019s Close , ,","place":["Bristol, U.K., BS8 1TS"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1403-4458","authenticated-orcid":true,"given":"William H.","family":"Gerwick","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]},{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]},{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Conor R.","family":"Caffrey","sequence":"additional","affiliation":[{"name":"University of California San Diego , , , ,","place":["La Jolla, California, United States, 92093"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,8,26]]},"reference":[{"issue":"10110","key":"2026090910090866900_cit1","doi-asserted-by":"publisher","first-page":"2397","DOI":"10.1016\/S0140-6736(17)31510-6","article-title":"Human African Trypanosomiasis","volume":"390","author":"Bu\u0308scher","year":"2017","journal-title":"Lancet"},{"key":"2026090910090866900_cit2","unstructured":"World Health Organization.\n          . 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