Jack Fruit 잎으로부터 새로운 Glucosyltransferase 저해물질 분리 및 화학구조

Chemical Structure and Isolation of Novel Glucosyltransferase Inhibitor from Artocarpus heterophyllus folium

충치 예방물질의 지속적인 연구로 Jack Fruit 잎으로부터 새로운 procyanidin류를 분리하였고 thiolysis 및 기기 분석에 의해 구조를 결정하였다. 신규화합물의 화학 구조는 flavan-3-ol 화합물의 삼량체인 $(-)-epiafzele-chin-(4{\beta}{\rightaroow}8)-afzelechin-(4{\alpha}{\rightaroow}8)-catechin$의 구조로, 분자량이 $833\;[M-H]^-$ 이었다. 화학 구조가 결정된 신규화합물의 glucosyltransferase저해 실험 결과 1.0 mM에서 완벽한 저해 효과가 관찰되었고 저해기작은 비경쟁적 저해제임을 알았다.

In the course of studies for anti-plaque agents, novel procyanidin structure isolated from Artocarpus heterophyllus folium was established by thiolysis and spectroscopic analysis. The chemical structure was identified for $(-)-epiafzelecin-(4{\beta}{\rightarrow}8)-afzelecin-(4{\alpha}-8)-catechin$ containing the trimeric flavan-3-ols and molecular weight was 833[M-H] by FAB-MS negative ion method. The inhibitory effect on the glucosyltransferase activity was investigated, novel compound showed complete inhibition at 1.0 mM and inhibited on the glucosyltransferase noncompetitively.