Syntheses of antifungal isocoumarins. III. Synthesis and antifungal activity of 3-aryl-3,4-dihydro-4-substituted-isocoumarins.
作者:KOOHEI NOZAWA、MIKIKO YAMADA、YOSHIKO TSUDA、KENICHI KAWAI、SHOICHI NAKAJIMA
DOI:10.1248/cpb.29.3486
日期:——
Various cis- and trans-3-aryl-3, 4-dihydro-8-(hydroxy or methoxy) isocoumarin-4-carboxylic acids (3-16) and their methyl esters (21-29) were prepared. In addition, cis- and trans-3, 4-dihydro-8-(hydroxy or methoxy)-4-hydroxyacetyl-3-phenylisocoumarins (33 or 32, and 35 or 34), cis- and trans-4-diazoacetyl-3, 4-dihydro-8-methoxy-3-phenylisocoumarins (30 and 31), trans-4-acetoxyacetyl-3, 4-dihydro-8-methoxy-3-phenylisocoumarin (36), and trans-4-acetyl-3, 4-dihydro-8-(hydroxy or methoxy)-3-phenylisocoumarins (38 or 37) were prepared. All the 3, 4-dihydroisocoumarins thus prepared were examined in vitro for antifungal activity. The introduction of a carboxyl, carbomethoxy, acetyl, diazoacetyl or hydroxyacetyl group at the 4-position of the 3, 4-dihydroisocoumarin nucleus resulted in the disappearance of the activity.
合成了多种顺-和反-3-芳基-3,4-二氢-8-(羟基或甲氧基)异香豆素-4-羧酸(3-16)及其甲酯(21-29)。此外,还合成了顺-和反-3,4-二氢-8-(羟基或甲氧基)-4-羟乙酰-3-苯异香豆素(33或32,以及35或34)顺-和反-4-重氮乙酰-3,4-二氢-8-甲氧基-3-苯异香豆素(30和31)、反-4-乙酰氧乙酰-3,4-二氢-8-甲氧基-3-苯异香豆素(36),以及反-4-乙酰-3,4-二氢-8-(羟基或甲氧基)-3-苯异香豆素(38或37)。所有这些合成的3,4-二氢异香豆素都进行了体外抗真菌活性的测试。在3,4-二氢异香豆素母核的4-位上引入羧基,甲氧羰基、乙酰基、重氮乙酰基或羟乙酰基的结果都使活性消失。