乙酸酐 、 aleurinin B 在
吡啶 作用下,
以19 mg的产率得到[(1S,19R,21R,22R,23R)-6,7,8,11,12,13,22-heptaacetyloxy-21-(2-cyanoprop-2-enoxy)-3,16-dioxo-2,17,20-trioxatetracyclo[17.3.1.04,9.010,15]tricosa-4,6,8,10,12,14-hexaen-23-yl] acetate
参考文献:
名称:
Tannins and related compounds. XCII. Isolation and characterization of cyanogenic ellagitannins, aleurinins A and B, and a related O-glycosidic ellagitannin, aleurinin C, from Aleurites fordii Hemsley.
摘要:
A chemical examination of the tannin ingredients in the leaves of the wood oil tree, Aleurites fordii HEMSLEY (Euphorbiaceae), has led to the isolation of three new ellagitannins named aleurinins A (4), B(5) and C(6), together with corilagin (1), geraniin (2) and chebulagic acid (3). on the basis of chemical and spectroscpic evidence, the structures of aleurinins A (4) and B (5) have been established as ellagitannins possessing a novel cyanopropylene alcohol glucoside core, while aleurinin C (6) has been characterized as an ellagitannin based on a hydroxyacetone glucoside core.
Tannins and related compounds. XCII. Isolation and characterization of cyanogenic ellagitannins, aleurinins A and B, and a related O-glycosidic ellagitannin, aleurinin C, from Aleurites fordii Hemsley.
摘要:
A chemical examination of the tannin ingredients in the leaves of the wood oil tree, Aleurites fordii HEMSLEY (Euphorbiaceae), has led to the isolation of three new ellagitannins named aleurinins A (4), B(5) and C(6), together with corilagin (1), geraniin (2) and chebulagic acid (3). on the basis of chemical and spectroscpic evidence, the structures of aleurinins A (4) and B (5) have been established as ellagitannins possessing a novel cyanopropylene alcohol glucoside core, while aleurinin C (6) has been characterized as an ellagitannin based on a hydroxyacetone glucoside core.