New manzamine alkaloids from an Indo-Pacific sponge. Pharmacokinetics, oral availability, and the significant activity of several manzamines against HIV-I, AIDS opportunistic infections, and inflammatory diseases
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12,28-Oxamanzamine A (1), 12,28-oxa-8-hydroxymanzamine A (2), and 31-keto-12,34-oxa-32,33-dihydroircinal A (3) were isolated from two collections of an Indo-Pacific sponge, and their structures were assigned on the basis of 1D and 2D NMR spectroscopic data. These compounds possess a novel manzamine-type ring system generated through a new ether bridge formed between carbons 12 and 28 or between carbons 12 and 34 of the typical manzamine structure and add to our growing understanding of manzamine SAR and metabolism. Based on molecular modeling studies, the formation of these oxidation products is highly sterically favored. The potent antiinflammatory, antifungal, and anti-HIV-1 activity for a number of previously reported manzamines is also presented in addition to the pharmacokinetic studies of manzamine A (5). Oral and intravenous pharmacokinetic studies of manzamine A in rats indicated the compound to have low metabolic clearance, a reasonably long pharmacokinetic half-life, and good absolute oral bioavailability of 20.6%, which supports the value of these compounds as potential leads for further preclinical assessment and possible development.
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- Authors
- Yousaf, M., Hammond, N. L., Peng, J., Wahyuono, S., McIntosh, K. A., Charman, W. N., Mayer, A. M. S., & Hamann, M. T.
- Affiliations
- Universitas Gadjah Mada (ID)
- Corresponding author
- Hamann, Mark T.
- Venue
- Journal of Medicinal Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-05-27
- Volume
- 47
- Issue
- 14
- Pages
- 3512-3517
- ISSN
- 0022-2623 (ISSN-L)
- 1520-4804
- PMC
- PMC4928483
- OpenAlex
- W2023736261
- Cited by
- 119
- References
- 15
- Citations by year
- 2026: 2 · 2025: 7 · 2024: 5 · 2023: 7 · 2022: 8 · 2021: 2 · 2020: 11 · 2019: 7 · 2018: 3 · 2017: 2 · 2016: 3 · 2015: 5 · 2014: 7 · 2013: 5 · 2012: 5
- FWCI
- 4.93
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Journal of Medicinal Chemistry (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute of Allergy and Infectious Diseases (R01AI036596)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Marine Sponges and Natural Products
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Synthesis and Biological Activity
- Health Sciences › Medicine › Pharmacology › Microbial Natural Products and Biosynthesis
- Keywords
- manzamine alkaloids, manzamine A, sponge natural products, structure-activity relationship, pharmacokinetics, oral bioavailability, anti-HIV-1 activity, antifungal activity, anti-inflammatory activity, marine natural products
- MeSH terms
- Administration, Oral, Animals, Anti-Inflammatory Agents, Anti-Bacterial Agents, Antifungal Agents, Biological Availability, Carbazoles, Carbolines, Fourier Analysis, Indoles, Injections, Intravenous, Male, Microbial Sensitivity Tests, Models, Molecular, Molecular Conformation, Magnetic Resonance Spectroscopy, Porifera, Pyrroles, Quinolines, Mass Spectrometry, Structure-Activity Relationship, HIV-1, AIDS-Related Opportunistic Infections, Rats, Sprague-Dawley, Anti-HIV Agents, Rats
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