Efficient synthesis of furochromone and furocoumarin natural products (khellin, pimpinellin, isophellopterin) by thermal rearrangement of 4-furyl-4-hydroxycyclobutenones
Efficient synthesis of furochromone and furocoumarin natural products (khellin, pimpinellin, isophellopterin) by thermal rearrangement of 4-furyl-4-hydroxycyclobutenones