Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 14, Issue 41, Pages 9868-9873Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ob01679k
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Funding
- Department of Science and Technology (DST), New Delhi
- IIT Bombay
- CSIR-New Delhi
- DST
- Praj industries for Chair Professorship (Green Chemistry)
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New synthetic strategies to indolocarbazoles have been reported via two-fold Fischer indolization under green conditions using L-(+)-tartaric acid and N,N-dimethyl urea. Starting with cyclohexanone, a bench-top starting material, this methodology has been extended to the total synthesis of natural products such as tjipanazoles D and I as well as the core structure of asteropusazole and racemosin B. Here, atom economical reactions like ring-closing metathesis, enyne-metathesis, and the Diels-Alder reaction have been used as key steps. Diverse strategies demonstrated here are useful in medicinal chemistry and materials science to design a library of decorated indoles.
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