Conversion of the iridoid glucoside antirrhinoside into 3-azabicyclo[3.3.0]octane building blocks
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Conversion of the iridoid glucoside antirrhinoside into 3-azabicyclo[3.3.0]octane building blocks. / Franzyk, Henrik; Frederiksen, S M; Jensen, S R.
In: Journal of Natural Products, Vol. 63, No. 5, 2000, p. 592-5.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Conversion of the iridoid glucoside antirrhinoside into 3-azabicyclo[3.3.0]octane building blocks
AU - Franzyk, Henrik
AU - Frederiksen, S M
AU - Jensen, S R
PY - 2000
Y1 - 2000
N2 - The iridoid glucoside antirrhinoside (1) was transformed into polysubstituted 3-azabicyclo[3.3.0]octanes 3, 12, and 13 in 4 to 5 steps. Ozonolysis of the diacetonide of 1 and of its 7-deoxy-derivative 8 afforded cyclopentanoids 2 and 10, respectively. Conditions for the selective conversion of 2 and 10 into the corresponding ditosylates 4 and 11 were investigated. Cyclization of 4 and 11 was achieved with benzylamine and 2-methoxybenzylamine to yield bicyclic pyrrolidines 3, 12, and 13. Additional building blocks 14 and 15 were obtained by selective deprotection of the N-benzyl and isopropylidene moieties in 12 and 13, respectively.
AB - The iridoid glucoside antirrhinoside (1) was transformed into polysubstituted 3-azabicyclo[3.3.0]octanes 3, 12, and 13 in 4 to 5 steps. Ozonolysis of the diacetonide of 1 and of its 7-deoxy-derivative 8 afforded cyclopentanoids 2 and 10, respectively. Conditions for the selective conversion of 2 and 10 into the corresponding ditosylates 4 and 11 were investigated. Cyclization of 4 and 11 was achieved with benzylamine and 2-methoxybenzylamine to yield bicyclic pyrrolidines 3, 12, and 13. Additional building blocks 14 and 15 were obtained by selective deprotection of the N-benzyl and isopropylidene moieties in 12 and 13, respectively.
KW - Aza Compounds
KW - Bicyclo Compounds
KW - Glucosides
KW - Hypoglycemic Agents
KW - Indicators and Reagents
KW - Iridoid Glucosides
KW - Iridoids
KW - Pyrans
KW - Substance P
M3 - Journal article
C2 - 10843565
VL - 63
SP - 592
EP - 595
JO - Journal of Natural Products
JF - Journal of Natural Products
SN - 0163-3864
IS - 5
ER -
ID: 43211704