Applications of two-dimensional NMR in spectral assignments of some friedelanes and secofriendelanes
作者:Amarendra Patra、Swapan K. Chaudhuri、Aditi K. Acharyya
DOI:10.1002/mrc.1260280116
日期:1990.1
Carbon‐13 spectral assignments of three friedelanes and nineteen secofriedelanes have been made from mutual correlations, 2D X‐H correlation analyses and comparison with the carbon shifts of friedelin, which were firmly established by an INADEQUATE experiment that required reassignment of some of its resonances. Specific methyl and methine proton resonanceassignments for somefriedelanes, established from
The Structures of the Triterpenes Friedelin and Cerin<sup>1,2</sup>
作者:E. J. Corey、J. J. Ursprung
DOI:10.1021/ja01600a064
日期:1956.10
Brownlie et al., Journal of the Chemical Society, 1956, p. 2419,2424
作者:Brownlie et al.
DOI:——
日期:——
170. Triterpenes of the friedelane series. Part III. The course of the friedelene–oleanene rearrangement
作者:J. L. Courtney、R. M. Gascoigne、A. Z. Szumer
DOI:10.1039/jr9580000881
日期:——
Sengupta, Pasupati; Das, Kanchan; Das, Saktipada, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1985, vol. 24, p. 1175 - 1177