Studies on the synthesis of amino acids XII. Solid‐liquid phase transfer catalytic dicondensation of 1,4‐diacetyl‐2,5‐piperazinedione with aldehydes

Du, Zhengming; Zhou, Xiaoming; Shi, Yun; Hu, Hongwen

doi:10.1002/cjoc.19920100114

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…The extract of the marine streptomycete B6003 has been noticeable in the screening through a selective activity against cancer cell lines. From this strain, four metabolites were isolated, among them a diketopiperazine 115, which is an albonoursin derivative [172] , but had been unknown from nature. The configuration of 115 was (Z) according to X-ray crystallography.…”

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confidence: 99%

Indole Alkaloids as Potential Leads in Drug Discovery and Further Secondary Metabolites from Terrestrial and Marine Bacteria

Nair¹

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Marine invertebrates have demonstrated to be an excellent resource of active molecules, one of the highly potent groups being indole alkaloids. While many of these marine alkaloids are very similar to the endogenous amines (serotonin, dopamine, or histamine), their expected resemblance to a range of neurological actions and substantial impact on animal behavior is nearly uninvestigated.Marine bacteria and other marine microorganisms develop unique metabolic and physiological abilities. These abilities enable them to survive in extreme habitats and to produce compounds that might not be produced by their terrestrial counterparts.Since 1990, the number of bioactive metabolites from marine bacteria has exponentially increased (Fig. 1) [10] .

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Indole Alkaloids as Potential Leads in Drug Discovery and Further Secondary Metabolites from Terrestrial and Marine Bacteria

Nair¹

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Ultrafast and Quantitative FRET Sensitization of Singlet Fission in Solution‐Processable Para‐Azaquinodimethane Films

Alebardi,

Munzone,

Sorbelli

et al. 2024

Adv Funct Materials

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In this work, a green protocol for the synthesis of new para‐Azaquinodimethane (pAQM) small molecules, functionalized with anisole (An) or bithiophene (TT) moieties on the central unit and with different alkoxy groups as lateral substituents is developed and reported. The alkoxy lateral substituents are found to strongly impact the solubility and processability of the chromophores. On the other hand, the steady–state and time‐resolved spectroscopic results show completely different spectral and photophysical features for the An‐ and TT‐ derivatives. Only for the TT‐compounds, the nanosecond and femtosecond transient absorption experiments reveal low efficiency of triplet production in solution as well as ultrafast (≈1 ps) and efficient (≈200%) singlet fission (SF) in thin film. The yellow An‐containing molecules are instead used to sensitize the purple SF‐active TT‐compounds via quantitative FRET in mixed thin films, which interestingly exhibit panchromatic absorption extending in the entire visible spectral range. With this study, the synergy between FRET and SF is exploited at the intermolecular level in the solid‐state for the first time by considering unconventional and stable SF chromophores, opening intriguing new possibilities for solar energy harvesting.

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Condensation of 1,4-Diacetyl-2,5-Piperazinedione With Aldehydes Promoted by Ultrasonically Dispersed Potassium

Wang¹,

Shi²,

Xu³

et al. 1996

Organic Preparations and Procedures International

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Studies on the synthesis of amino acids XII. Solid‐liquid phase transfer catalytic dicondensation of 1,4‐diacetyl‐2,5‐piperazinedione with aldehydes

Cited by 4 publications

References 8 publications

Indole Alkaloids as Potential Leads in Drug Discovery and Further Secondary Metabolites from Terrestrial and Marine Bacteria

Indole Alkaloids as Potential Leads in Drug Discovery and Further Secondary Metabolites from Terrestrial and Marine Bacteria

Ultrafast and Quantitative FRET Sensitization of Singlet Fission in Solution‐Processable Para‐Azaquinodimethane Films

Condensation of 1,4-Diacetyl-2,5-Piperazinedione With Aldehydes Promoted by Ultrasonically Dispersed Potassium

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