In continuation of our i3C nmr study of terpenic natural productsb2 the natural abundance "C nmr spectra of lanosterol (2). dihydrolanosterol (e) and related substances were recorded. Noise decoupled, single frequency off-resonance decoupled' and, whenever needed, noise off-resonance decoupled spect
Carbon-13 nuclear magnetic resonance spectroscopy of naturally occurring substances. Prostaglandins
✍ Scribed by Gabor Lukacs; François Piriou; Stephan D. Gero; David A. Van Dorp; Edward W. Hagaman; Ernest Wenkert
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- French
- Weight
- 207 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
We wish to report the first natural abundance 13C nmr study of the prostaglandins, 3 chemical shift analysis of members of the PGE (!, 2&, PGF (a-12, and PGA (3 group and interpretation of the data in terms of the solution hehavior of these biologically important substances. T&l& Cmr Chemical Shiftsa C(1) aa C(3) C(4) C(5) C(6) C(7) C(8) C(9) C(l0) C(ll) C(l2) C(l3) C(l4) C(l5) C(l6) C(l7) C(l8) C(l9) C(20)
📜 SIMILAR VOLUMES
## Abstract The ^13^C NMR spectra of lupeol and related triterpenes were recorded and all carbon shifts assigned. Their analysis aided in the shift assignment of the structurally related hopane‐like triterpenes.
## Abstract ^13^C NMR spectra of friedelan, friedelan‐21‐one, friedelan‐6‐one, friedelane‐321‐dione, friedelane‐3,6‐dione and friedelane‐3,6,21‐trione have been recorded and signals assigned using off‐resonance decoupling, inversion recovery and lanthanide induced shift techniques.
h number of alcohols with the general formula I, where 7~ = 1 to 13, occur in nature. Green leaves of many higher plant,s yield polyprenols (structure I) in which TL = 9 to 13 (l-4), while the wood of the silver hircsh contains polyprenols with from 6 to 9 isoprene residues (1, 5, 6). A series of al
## Abstract Carbon‐13 chemical shift assignments have been obtained for the naturally occurring __Cephalotaxus__ alkaloids, cephalotaxine, acetylcephalotaxine, harringtonine, isoharringtonine, drupacine and cephalotaxinone.