Table 5.
Step No. | Step | AZA1 (mg) | AZA2 (mg) | Weight (g) | Purity (%) † |
---|---|---|---|---|---|
HP-20 resin extract | 12.5 | 3.2 | 3.04 | 0.5 | |
1 | Partitioning | 11.2 | 3.0 | 1.32 | 1.1 |
2 | Silica gel | 10.2 | 2.8 | 0.17 | 7.6 |
3 | Flash (Phenyl-Hexyl) * | 9.7 | 2.4 | 0.01 | >90 |
4 | Prep HPLC (C8/C18) | 9.3 | 2.2 | - | >95 |
% Recovery (steps 1–4) | 75 | 70 |
* AZA1 and AZA2 were separated from each other in this step. † Total AZA1 + 2, based on w/w.