Tetrahydrolipstatin: Degradation products produced by human carboxyl-ester lipase
作者:Henri Stalder、Gottfried Oesterhelt、Bengt Borgström
DOI:10.1002/hlca.19920750513
日期:1992.8.13
fate of tetrahydrolipstatin (1) incubated with human carboxyl-ester lipase (HCEL) was investigated. The primary metabolite was identified as δ-(N-formyl-L-leucyloxy)-β-hydroxy acid 2a with conserved configuration. It is formed by attack of the active-site serine of HCEL at the carbonyl C-atom of the β-lactone ring of 1 followed by hydrolysis of the intermediate serine ester. Further products isolated
研究了与人羧基酯脂肪酶(HCEL)孵育的四氢脂肪抑制素(1)的命运。初级代谢产物被鉴定为具有保守构型的δ-(N-甲酰基-L-亮氨酰氧基)-β-羟基酸2a。它是由HCEL的活性位丝氨酸攻击1的β-内酯环的羰基C原子,然后水解中间丝氨酸酯形成的。鉴定出进一步分离的产物,并提出了完整的降解方案。