Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, USA.
Org Lett. 2011 Aug 5;13(15):3920-3. doi: 10.1021/ol201443k. Epub 2011 Jul 12.
Three new briarane diterpenoids, briareolate esters L-N (1-3), have been isolated from a gorgonian Briareum asbestinum. Briareolate esters L (1) and M (2) are the first natural products possessing a 10-membered macrocyclic ring with a (E,Z)-dieneone and exhibit growth inhibition activity against both human embryonic stem cells (BG02) and a pancreatic cancer cell line (BxPC-3). Briareolate ester L (1) was found to contain a "spring-loaded" (E,Z)-dieneone Michael acceptor group that can form a reversible covalent bond to model sulfur-based nucleophiles.
从柳珊瑚 Briareum asbestinum 中分离得到了三种新的柳珊瑚二萜类化合物,briareolate 酯 L-N(1-3)。briareolate 酯 L(1)和 M(2)是第一个具有 10 元大环的天然产物,其中含有(E,Z)-二烯酮,并对人胚胎干细胞(BG02)和胰腺癌细胞系(BxPC-3)均表现出抑制生长活性。发现 briareolate 酯 L(1)含有一个“弹簧加载”(E,Z)-二烯酮迈克尔受体基团,可与模型含硫亲核试剂形成可逆的共价键。