Application of a new TLC chemical method for detection of cyclopeptides in plants |
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Authors: | Jun Zhou Ninghua Tan |
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Institution: | (1) Laboratory of Phytochemislry, Kunming Institute of Botany, Chinese Academy of Sciences, 650204 Kunming, China |
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Abstract: | Cyclopeptides have been investigated phytochemically less often because until now there has not been a special chemical method
to detect them. Since we found cyclopeptides inPseudostellaria heterophylla (Caryophyllaceae) in 1991, we have gradually established a special chemical detection method for detecting cyclopeptides
in plants, which induces a new thin layer chromatography (TLC) protosite reaction with ninhydrin reagent. With this method,
our group isolated and determined 73 cyclopeptides from 17 plants which belong to 5 families and 14 genuses, they are from
dicyclopeptides to undecacyclopeptides, including 68 new ones, and were determined based on spectral, chemical and enzymic
methods, especially 2D NMR and FAB-MS. Meantime, with this method cyclopeptides can be distinguished from peptidic amides
based on their behaviour in TLC. |
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Keywords: | TLC chemical detection method cyclopeptides |
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