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Steroid saponins and sapogenins ofAllium. XX. Structure of karatavisoides E and F

✍ Scribed by Yu. S. Vollerner; N. D. Abdullaev; M. B. Gorovits; N. K. Abubakirov

Publisher
Springer
Year
1984
Tongue
English
Weight
417 KB
Volume
20
Category
Article
ISSN
0009-3130

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25R/25S stereochemistry of spirostane-ty
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✍ Pawan K. Agrawal πŸ“‚ Article πŸ“… 2003 πŸ› John Wiley and Sons 🌐 English βš– 96 KB

## Abstract A method based on the differences among the ^1^H NMR chemical shifts of geminal protons of ring‐F methylene resonances (H~2~‐23, H~2~‐24 and H~2~‐26) is proposed for ascertaining the 25__R__/25__S__ stereochemistry of ring‐F unsubstituted spirostane‐type steroidal sapogenins and steroid