Methanol → HCID 131720834, compound

Participants

Reaction Steps

Agmatine sulfate (100 mg, 0.438 mmol) was treated by tetramethylamonium hydroxide (158 mg, 0.876 mmol) in methanol (15 ml) for 1 h. The solvent was removed under reduced pressure. A suspension solution of the residue and cholesteryl chloroformate (197 mg, 0.438 mmol) in DMF (15 ml) was stirred at room temperature for 3 days. Filtration of the reaction mixture gave the crude product as a light yellow solid, which was purified by a silica gel column using chloroform-methanol-acetic acid (10:2:1) as eluent to yield the agmatinyl carboxycholesterol acetic acid salt as a white solid. 1H NMR (300 MHz, CD3OD): δ 5.27 (broad s, 1H), 4.65 (broad m, 1H), 3.06 (t, 2H), 2.99 (t, 2H), 2.21 (broad d, 2H), 1.95-0.65 (m, 31H), 1.80 (s, 4H), 0.91 (s, 3H), 0.82 (d, 3H), 0.76 (s, 3H), 0.74 (s, 3H), 0.59 (s, 3H). LSIMS (NBA): m/e 543.4 for M+ (C33H59N4O2).

Provenance & Evidence