Novel norcassane-type diterpene from the seed kernels of Caesalpinia crista |
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| Authors: | Arjun H BanskotaFaisal Attamimi Tepy UsiaThein Zaw Linn Yasuhiro TezukaSurya K Kalauni Shigetoshi Kadota |
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| Institution: | a Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan
b Faculty of Mathematics and Natural Sciences, Hasanuddin University, Makassar, Indonesia |
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| Abstract: | Three novel norcassane-type diterpenes were isolated from a CH2Cl2 extract of the seed kernels of Caesalpinia crista together with four known cassane-type diterpenes. All the new compounds represent unprecedented carbon framework. Norcaesalpinin A (1) and B (2) had 17-norcassane skeleton, while norcaesalpinin C (3) had 16-norcassane skeleton. Their structures were elucidated on the basis of spectral analysis. |
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