Помогите, пожалуйста, со статьями:
1) Shigeo Nozoe and Kazuo T. Suzuki
The structure op the triprenyl phenol derivatives biosynthetically related to siccanin
Tetrahedron Letters, Volume 10, Issue 29, 1969, Pages 2457-2460
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http://dx.doi.org/10.1016/S0040-4039(01)88189-2
NMR effects of acetylation and long-range coupling as a tool for structural elucidation of hydroxychromenes
Tetrahedron Letters, Volume 8, Issue 43, 1967, Pages 4201-4206
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http://dx.doi.org/10.1016/S0040-4039(00)72996-0