The structure of guyanin, a new type of tetranortriterpenoid isolated from Hortia regia, has been determined by nmr spectroscopy. Indirect shift correlation experiments were crucial for this determination. Hortia regia Vand. (Rutaceae), collected in Guyana, has afforded a new sub-
Guyanin, a novel tetranortriterpenoid: structural characterization by 2D NMR spectroscopy and x-ray crystallography
✍ Scribed by McLean, Stewart.; Perpick-Dumont, Marion.; Reynolds, William F.; Sawyer, Jeffery F.; Jacobs, Helen.; Ramdayal, Frank.
- Book ID
- 126102215
- Publisher
- American Chemical Society
- Year
- 1988
- Tongue
- English
- Weight
- 792 KB
- Volume
- 110
- Category
- Article
- ISSN
- 0002-7863
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract From the chloroform extract of __Austroplenckia populnea__, epikatonic acid, friedelin, populnonic acid, abruslactone A, salaspermic acid and 22β‐epi‐maytenfolic acid were isolated. The structure and stereochemistry of epikatonic acid were established by two‐dimensional NMR spectroscopi
## Abstract Structural studies in the solid state by X‐ray crystallography and by ^13^C and ^15^N CPMAS NMR spectroscopy carried out on a series of 2‐aminotroponimine derivatives **2**−**5** has allowed to establish the existence of hydrogen bonding and to determine the most stable tautomer. Almost
The synthesis and characterization of 1,3,10,12-tetraoxo-2,11-(diphenylsilylene)[5.5]paracyclophane obtained by reaction of 1,4-benzenedimethanol and dichlorodiphenylsilane is reported. The structure was established by mass spectrometry; 1 H, 13 C, and 29 Si NMR; and X-ray diffraction analysis.
## Abstract A series of (±)‐3‐aryl‐1‐azabicyclo[2.2.2]octan‐3‐ols were synthesized and studied by ^1^H, ^13^C and 2D NMR spectroscopy, and the crystal structure of (±)‐3‐(4‐methylphenyl)‐1‐azabicyclo[2.2.2]octan‐3‐ol was determined by X‐ray diffraction. The combined use of COSY, NOESY and ^1^H–^13^