Total syntheses of macrosphelides (+)-A, (−)-A and (+)-E
摘要:
Total syntheses of (+)-macrosphelide A 1 (18.5% overall yield in 11 steps) and (+)-macrosphelide E 2 (23.9% overall yield in 11 steps) have been achieved via the chemoenzymatic reaction product (4R,5S)-4-benzyloxy-5-hydroxy-2(E)-hexenoate 4. The enantiomer (-)-A (1) (14.2% overall yield in 11 steps) of (+)-1 was also synthesized from the chemoenzymatic reaction product (4S,SR)-4-benzyloxy-5-hydroxy-2(E)hexenoate 4. (C) 2000 Elsevier Science Ltd. All rights reserved.
Total syntheses of macrosphelides (+)-A, (−)-A and (+)-E
摘要:
Total syntheses of (+)-macrosphelide A 1 (18.5% overall yield in 11 steps) and (+)-macrosphelide E 2 (23.9% overall yield in 11 steps) have been achieved via the chemoenzymatic reaction product (4R,5S)-4-benzyloxy-5-hydroxy-2(E)-hexenoate 4. The enantiomer (-)-A (1) (14.2% overall yield in 11 steps) of (+)-1 was also synthesized from the chemoenzymatic reaction product (4S,SR)-4-benzyloxy-5-hydroxy-2(E)hexenoate 4. (C) 2000 Elsevier Science Ltd. All rights reserved.