J Integr Plant Biol. ›› 2000, Vol. 42 ›› Issue (1): -.
• Research Articles •
ZHOU Jin-Yun， CHEN Wei-Ming， FANG Qi-Cheng
The paper reviewed the 13C-NMR features of natural taxane diterpenoids according to their carbon-skeleton types. In the 13C-NMR it is easy to distinguish the 6/8/6 and 5/7/6 membered rings by observation of the 13C-NMR data of C-1 and C-15. The remarkable differences of the resonance of C -13 and C-12 were found. In addition, based on various chemical environments man y obscured chemical shifts of carbons can be distinguished, such as the oxygenat ed tertiary carbons of C-2, C-5, C-7, C-9 and C-13, and sometimes between C-9 an d C-10, as well as between aliphatic quaternary carbons of C-8 and C-15, and sec ondary carbons of C-6 and C-14. All the above-mentioned characteristics are helpful for structural elucidation and assignments of the carbon signals of taxoids.
natural taxane diterpenoids,
13C-NM tural taxane diterpenoids,
ZHOU Jin-Yun, CHEN Wei-Ming, FANG Qi-Cheng. The 13C-NMR Features of Natural Taxane Diterpenoid Compounds[J]. J Integr Plant Biol., 2000, 42(1): -.
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