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Beilstein J. Org. Chem. 2015, 11, 1367–1372, doi:10.3762/bjoc.11.147
Graphical Abstract
Figure 1: Structures of diverse biologically as well as theoretically interesting molecules.
Figure 2: Retrosynthetic analysis of bis-spiro-pyrano cage compound 7.
Scheme 1: Synthesis of hexacyclic cage dione 10.
Scheme 2: Synthesis of tetrahydrofuran-based cage compounds 12 and 13.
Figure 3: (a)Optimized structure of 12, (b) optimized structure of 13.
Scheme 3: Synthesis di-allyl cage compound 11.
Scheme 4: Synthesis of spiro-pyrano cage molecules 7 and 17.
Figure 4: (a) Optimized structure of 18, (b) optimized structure of 7.
Scheme 5: Synthesis of octacyclic cage compound 18 via intramolecular DA reaction.
Scheme 6: Attempted synthesis to cage compound 20.
Beilstein J. Org. Chem. 2012, 8, 1901–1908, doi:10.3762/bjoc.8.220
Figure 1: Structure of meridianins A–G.
Scheme 1: Synthesis of functionalized meridianin with an amino group at position 5.
Scheme 2: Synthesis of a functionalized meridianin with an amino group at position 5.
Scheme 3: Synthesis of substrate for the modified Pictet–Spengler reaction.
Scheme 4: The Pictet–Spengler reaction involving substrate 2a. Reagents and conditions: (i) RCHO, 2% triflic ...
Scheme 5: Synthesis of dihydropyrimido-β-carbolines: (i) R-CHO, 2% triflic acid in DMF, 120 °C, 16 h.
Scheme 6: Synthesis of substrates 18a–c for the modified Pictet–Spengler reaction.
Scheme 7: General strategy for the Pictet–Spengler reaction involving substrates 18. Reagents and conditions:...