中文摘要：

以3,4-二羟基苯丙烯酸（咖啡酸）为原料,经酯化和仿生氧化偶联反应得到苯并呋喃类化合物2-（3′,4′-二羟基苯基）-3-甲氧羰基-5-甲氧羰基乙烯基-7-羟基-2,3-二氢苯并呋喃（1）和苯并二氧六环类化合物2-（3′,4′-二羟基苯基）-3-甲氧羰基-6-甲氧羰基乙烯基-2,3-二氢-1,4-苯并二氧六环（2）,然后经乙酰化、DDQ氧化脱氢、Pd/C 催化氢化、氢化铝锂还原、碱性条件下脱乙酰基等反应,合成了一系列苯并呋喃新木脂素类化合物3~7和苯并二氧六环新木脂素类化合物8~10.所合成化合物的结构已由核磁共振法（1 H NMR,13 C NMR）、质谱法（MS）进行了表征.其中5~7,9和10是未见文献报道的新化合物,8为天然产物异美商陆醇A.采用MTT法对所合成的苯并呋喃新木脂素类化合物1,3~5进行了生物活性测试.结果表明：化合物1,3,4和5对白血病细胞（HL-60）、肺癌细胞（A-549）、乳腺癌细胞（MCF-7）、结肠癌细胞（SW-480）、肝癌细胞（SMMC-7721）有良好的体外生长抑制活性.

英文摘要：

Benzofurans compound 2-（3＇,4＇-dihydroxyphenyl）-3-methoxy carbonyl-5-methoxy carbonyl vinyl-7-hydroxy-2,3-dihydrobenzofuran （1）and benzodioxanes compound 2-（3＇,4＇-dihydroxyphenyl）-3-me-thoxy carbonyl-6-methoxy carbonyl vinyl-2,3-dihydro-1,4-benzodioxane （2）were synthesized from caffeic acid through esterification and biomimetic oxidative coupling reactions.Moreover,a series of benzofuran-neolignan compounds 3~7 and benzodioxaneneolignan compounds 8~10 were synthesized from compounds 1 and 2 respectively through acetylation,DDQ oxydehydrogenation,Pd/C catalytic hydrogenation,lithium aluminium hydride reduction and deacetylation in alkaline condition.All of these synthesized compounds were confirmed with MS,IR,1 H NMR and 13 C NMR spectra.Among them,5~7,9 and 10 are new com-pounds.8 is the natural product isoamericanol A.The biological activities of benzofuranneolignan com-pounds 1 ,3~5 against five human cancer cell lines were evaluated in the standard MTT method,and the results have shown that compounds1,3,4 and 5 exhibit good inhibitory effect on leukemia cells （HL-60）, lung carcinoma cell （A-549）,breast cancer cell （MCF-7）,colon cancer cell （SW-480）,and hepatoma car-cinoma cell （SMMC-7721 ）.