Amorisin and Sigmoidin-B has been symthesized by demethylation of 3-methoxy-4-hydroxy-5-prenylbenzaldehyde followed by condensation of 3, 4-dimethoxy methoxy-5-prenylbenzaldehyde with 2- hydroxy-4 , 6-dimethoxymethyox...Amorisin and Sigmoidin-B has been symthesized by demethylation of 3-methoxy-4-hydroxy-5-prenylbenzaldehyde followed by condensation of 3, 4-dimethoxy methoxy-5-prenylbenzaldehyde with 2- hydroxy-4 , 6-dimethoxymethyoxy-3, 5-deprenylacetophenone and 2-hydroxy-4, 6-dimethoxymethoxyaceto- phenone, cyclization and demethoxymethylation.展开更多
Four 8, 8'-biflavones were synthesized by the iodination of 2'-hydroxychalcones at 8-position in I-2-H2SO4-DMSO system as the key step followed by coupling under Ullmann reaction conditions.
Methoxy-5′-prenylnaringenin was first synthesized via the condensation of 2-hydroxy- 4, 6-dimethoxymethoxyacetophenone with 3 - methoxy - 4 - methoxymethoxy- 5- prenylbenzaldehyde followed by cyclization and demet...Methoxy-5′-prenylnaringenin was first synthesized via the condensation of 2-hydroxy- 4, 6-dimethoxymethoxyacetophenone with 3 - methoxy - 4 - methoxymethoxy- 5- prenylbenzaldehyde followed by cyclization and demethoxymethylation .展开更多
Amoritin has ben prepared by the condensation of 2-hydroxy-4,6-dimethoxymethoxy-3,5-diprenylacetophenone with 3-methoxy-4-methoxymethoxy-5-prenylbenzaldehyde followed by cyclization and demethioxymethylation.
Three 3, 3'-biflavones were synthesized by using iodination of flavones through I-2-CAN system as the key step followed by the coupling of 3-iodoflavones under the Ullmann reaction conditions.
文摘Amorisin and Sigmoidin-B has been symthesized by demethylation of 3-methoxy-4-hydroxy-5-prenylbenzaldehyde followed by condensation of 3, 4-dimethoxy methoxy-5-prenylbenzaldehyde with 2- hydroxy-4 , 6-dimethoxymethyoxy-3, 5-deprenylacetophenone and 2-hydroxy-4, 6-dimethoxymethoxyaceto- phenone, cyclization and demethoxymethylation.
文摘Four 8, 8'-biflavones were synthesized by the iodination of 2'-hydroxychalcones at 8-position in I-2-H2SO4-DMSO system as the key step followed by coupling under Ullmann reaction conditions.
文摘Methoxy-5′-prenylnaringenin was first synthesized via the condensation of 2-hydroxy- 4, 6-dimethoxymethoxyacetophenone with 3 - methoxy - 4 - methoxymethoxy- 5- prenylbenzaldehyde followed by cyclization and demethoxymethylation .
文摘Amoritin has ben prepared by the condensation of 2-hydroxy-4,6-dimethoxymethoxy-3,5-diprenylacetophenone with 3-methoxy-4-methoxymethoxy-5-prenylbenzaldehyde followed by cyclization and demethioxymethylation.
文摘Three 3, 3'-biflavones were synthesized by using iodination of flavones through I-2-CAN system as the key step followed by the coupling of 3-iodoflavones under the Ullmann reaction conditions.
