Banara parviflora (A. Gray) Benth. is a species that belongs to Salicaceae family and is native to Southern Brazil. Fractionation of the ethanolic extract from Banara parviflora leaves afforded, a new compound identified as N 1,N 8-dibenzoylspermidinyl-N 4-acetamide, a spermidine alkaloid. The structure was elucidated by spectroscopic methods (IR, MS, 1H, 13C and 2-D NMR).
Keywords:
Banara parviflora; N1,N8-dibenzoylspermidinyl-N4-acetamide; Spermidine alkaloids
| Position | 1 | |
|---|---|---|
| δ C a a 125 MHz, CDCl3. | δHb b 500 MHz, CDCl3. (multiplicity, J in Hz) | |
| 1 | 36.2 (CH2) | 3.37 (m, 6.0; 6.8) |
| 2 | 27.1 (CH2) | 1.78 (m, 6.2; 6.8) |
| 3 | 42.5 (CH2) | 3.46 (dd, 6.2) |
| 5 | 48.4 (CH2) | 3.32 (dd, 7.1) |
| 6 | 26.0 (CH2) | 1.68 (m) |
| 7 | 27.0 (CH2) | 1.65 (m) |
| 8 | 39.1 (CH2) | 3.47 (m) |
| 9 | 171.8 (C) | – |
| 10 | 21.3 (CH3) | 2.13 (s) |
| 8C-NH | – | 6.85 (dd, 6.0; 7.2) |
| 1C-NH | – | 7.93 (dd, 6.1; 7.1) |
| 1' | 167.6 (C) | – |
| 2' | 134.2 (C) | – |
| 3'; 7' | 127.0 (CH) | 7.87 (dd, 7.1; 1.7) |
| 4'; 6' | 128.5 (CH) | 7.43 (dd, 7.1; 1.7) |
| 5' | 131.3 (CH) | 7.48 (m, 7.1) |
| 1" | 168.0 (C) | – |
| 2" | 134.3 (C) | – |
| 3"; 7" | 126.8 (CH) | 7.77 (dd, 7.2; 1.5) |
| 4"; 6" | 128.5 (CH) | 7.43 (dd, 7.2; 1.5) |
| 5" | 131.5 (CH) | 7.50 (m, 7.2) |
