Two alternative synthetic routes of the left-half segment 5 have been developed. Efficient condensation between the left and right segments followed by Pd-catalyzed deoxygenation and further elaboration achieved the first total synthesis of AAL-toxin TA(1). This allowed us to synthesize various AAL-toxin analogs which would be useful for investigating SAR studies of AAL-toxins. (C) 1999 Elsevier Science Ltd. All rights reserved.
Two alternative synthetic routes of the left-half segment 5 have been developed. Efficient condensation between the left and right segments followed by Pd-catalyzed deoxygenation and further elaboration achieved the first total synthesis of AAL-toxin TA(1). This allowed us to synthesize various AAL-toxin analogs which would be useful for investigating SAR studies of AAL-toxins. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthetic study of AAL-toxins: Efficient construction of two vicinal diol moieties by asymmetric dihydroxylation
Asymmetricdihydroxylation has been applied to syntheses of twovicinal anti-diol moieties in key intermediates of AAL-toxins. The strategy allowed efficientconstruction of left- and right segments of AAL-toxin main chain.