(3S)-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-3-methylbutan-1-ol—A universal building block for the synthesis of principal fragments of amphidinolides G and H
摘要:
A new scheme has been proposed for the synthesis of cytotoxic macrocyclic lactones, amphidinolides G and H. Synthetic analogs of the C(7)aEuro'C-14, C(15)aEuro'C-19, and C(20)aEuro'C-26 fragments of amphidinolides G and H have been prepared from the same starting compound, (3S)-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-3-methylbutan-1-ol. The developed procedures and obtained products may be used in the synthesis of related compounds containing similar structural fragments.
(3S)-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-3-methylbutan-1-ol—A universal building block for the synthesis of principal fragments of amphidinolides G and H
摘要:
A new scheme has been proposed for the synthesis of cytotoxic macrocyclic lactones, amphidinolides G and H. Synthetic analogs of the C(7)aEuro'C-14, C(15)aEuro'C-19, and C(20)aEuro'C-26 fragments of amphidinolides G and H have been prepared from the same starting compound, (3S)-4-[(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-3-methylbutan-1-ol. The developed procedures and obtained products may be used in the synthesis of related compounds containing similar structural fragments.
New 2-substituted functionalized allyl halides in the synthesis of fragments of amphidinolides B, D, G, H, and L
作者:I. V. Mineeva
DOI:10.1134/s1070428017030204
日期:2017.3
asymmetric syntheses of several new allyl bromides as C9–C14 fragments of cytotoxic macrolactones, amphidinolides B, D, G, H, and L, have been developed starting from accessible 1-[(2S)-4,4-dimethoxy-2-methylbutyl]cyclopropyl methanesulfonate prepared through cyclopropanol intermediates. Original synthetic approaches to the C7–C16, C7–C14, and C9–C16 amphidinolide fragments are also described.
In order to determine the stereochemistry of amphidinolide L (1), a cytotoxic macrolide from a marine dinoflagellate, (8S,9S,11R)-2a and (8R,9R,11R)-2b, two diastereomers of the C-1 similar to C-14 segment and (8S,9S,11R)-4a and (8R,9R,11R)-4b, two diastereomers of the C-7 similar to C-14 segment have been synthesized, providing authentic samples for degradation products of 1. (C) 1997 Elsevier Science Ltd. All rights reserved.
Synthesis of ethyl (2E,5S)-7-{[tert-butyl(dimethyl)silyloxy]-methyl}-5-methylocta-2,7-dienoate, a universal C7–C14 building block for the preparation of amphidinolides B, D, G, H, and L
作者:I. V. Mineeva
DOI:10.1134/s1070428015070052
日期:2015.7
A new simple and efficient procedure has been developed for the asymmetric synthesis of the C-7-C-14 building block for cytotoxic macrolactones, amphidinolides B, D, G, H, and L, on the basis of (4S,6S)-6-benzyloxymethyl-4-methyltetrahydro-2H-pyran-2-one prepared through cyclopropanol intermediates.