Structure and Absolute Stereochemistry of Pseudorepanduline. 13 C-nmr Studies on Repanduline-Type Alkaloids
β Scribed by Koike, Luzia; Reis, Francisco de A. M.; Bick, I. Ralph C.
- Book ID
- 126454860
- Publisher
- American Chemical Society
- Year
- 1992
- Tongue
- English
- Weight
- 352 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0163-3864
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π SIMILAR VOLUMES
## Abstract From the stem of Piper trichostachyon C. DC. a new alkaloid designated piperstachine (VII) has been isolated. Its structure is derived on the basis of spectral data and synthesis of hexahydropiperstachine (X).
The 'H and I3C NMR spectra of a series of structurally related crown ethers have been recorded, and the signals assigned by means of 'H/I3C heteronuclear correlated and 'H/'H homonuclear NOE difference spectroscopy. The NMR parameters so extracted have been used to discuss the preferred, rapidly int