Author details

Weisheng Feng\*, Zhiyou Hao and Meng Li

\*Address all correspondence to: fwsh@hactcm.edu.cn

School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China

## References


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4.5.2.8. Pterocarpins

40 Flavonoids - From Biosynthesis to Human Health

Author details

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Weisheng Feng\*, Zhiyou Hao and Meng Li

\*Address all correspondence to: fwsh@hactcm.edu.cn

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School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China

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The spectral characteristics are shown in Table 24 [36].

group is attached to position 6a, as shown in Table 25 [37].

The relationships between the CE and absolute configurations will change after a hydroxyl

Relative configuration of between C-6a and C-11a CE Absolute configuration

Trans- � � 6aS, 11aR

Cis- þ � 6aS, 11aS

Table 25. Relationship of absolute configurations of 6a-hydroxyl pterocarpins with CE.

260–310 nm 220–250 nm

þ þ 6aR, 11aS

� þ 6aR, 11aR


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