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Synthesis and biological evaluation of 2,4,6-trinitroaniline derivatives as potent antitumor agents. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02690-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lamoureux G, Alvarado-Rojas M, Pineda LW. Crystal structure of ( E)-2-( tert-butyl-amino)-4-( tert-butyl-imino)-naphthalen-1(4 H)-one. Acta Crystallogr E Crystallogr Commun 2018; 74:973-976. [PMID: 30002897 PMCID: PMC6038644 DOI: 10.1107/s2056989018008514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 06/09/2018] [Indexed: 11/10/2022]
Abstract
The title compound, C18H24N2O, is the first example of a naphtho-quinone imine derivative isolated in the 4-imine/2-amine tautomeric form having bulky alkyl substituents at the N atoms. The mol-ecular conformation is stabilized by an intra-molecular hydrogen bond between the amine and a carbonyl group and by London attraction between the two tert-butyl groups. Only van der Waals inter-actions were identified in the crystal packing.
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Affiliation(s)
- Guy Lamoureux
- Escuela de Química, Universidad de Costa Rica, 2060 San Pedro, San José, Costa Rica
- Centro de Investigación en Productos Naturales (CIPRONA), Universidad de Costa, Rica, 2060 San José, Costa Rica
| | - Mónica Alvarado-Rojas
- Escuela de Química, Universidad de Costa Rica, 2060 San Pedro, San José, Costa Rica
- Centro de Investigación en Productos Naturales (CIPRONA), Universidad de Costa, Rica, 2060 San José, Costa Rica
| | - Leslie W. Pineda
- Escuela de Química, Universidad de Costa Rica, 2060 San Pedro, San José, Costa Rica
- Centro de Electroquímica y Energía Química (CELEQ), Universidad de Costa Rica, 2060 San José, Costa Rica
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Zlotkowski K, Hewitt WM, Yan P, Bokesch HR, Peach ML, Nicklaus MC, O’Keefe BR, McMahon JB, Gustafson KR, Schneekloth JS. Macrophilone A: Structure Elucidation, Total Synthesis, and Functional Evaluation of a Biologically Active Iminoquinone from the Marine Hydroid Macrorhynchia philippina. Org Lett 2017; 19:1726-1729. [PMID: 28345939 PMCID: PMC6318790 DOI: 10.1021/acs.orglett.7b00496] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A previously uncharacterized pyrroloiminoquinone natural product, macrophilone A, was isolated from the stinging hydroid Macrorhynchia philippina. The structure was assigned utilizing long-range NMR couplings and DFT calculations and proved by a concise, five-step total synthesis. Macrophilone A and a synthetic analogue displayed potent biological activity, including increased intracellular reactive oxygen species levels and submicromolar cytotoxicity toward lung adenocarcinoma cells.
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Affiliation(s)
- Katherine Zlotkowski
- Chemical Biology Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
| | - William M. Hewitt
- Chemical Biology Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
| | - Pengcheng Yan
- Molecular Targets Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People’s Republic of China
| | - Heidi R. Bokesch
- Molecular Targets Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United States
| | - Megan L. Peach
- Chemical Biology Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, United States
| | - Marc C. Nicklaus
- Chemical Biology Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
| | - Barry R. O’Keefe
- Molecular Targets Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
- Natural Products Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
| | - James B. McMahon
- Molecular Targets Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
| | - Kirk R. Gustafson
- Molecular Targets Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
| | - John S. Schneekloth
- Chemical Biology Laboratory, Center for Cancer Research, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick, Maryland 21702, United States
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