| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | (5S)-5-{[(tert-butyl)dimethylsilyl]oxy}-7-hydroxy-4,4-dimethylheptan-3-one | 250679-53-9 | C15H32O3Si | 288.503 |
| —— | (S)-3-((tert-butyldimethylsilyl)oxy)-4,4-dimethyl-5-oxoheptanoic acid | 187283-45-0 | C15H30O4Si | 302.486 |
| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | (3S,6R,7S,8S)-11-(benzyloxy)-3,7-bis{[(tert-butyl)dimethylsilyl]oxy}-4,4,6,8-tetramethyl-5-oxoundecanoic acid methyl ester | 279227-10-0 | C35H64O6Si2 | 637.061 |
| —— | 1,3,7-tris-(tert-butyl-dimethyl-silanyloxy)-11-hydroxy-4,4,6,8-tetramethyl-undecan-5-one | 914455-94-0 | C33H72O5Si3 | 633.188 |
| —— | (5S,6R,9S)-5-((S)-5-aminonentan-2-yl)-9-(tert-butyldimethylsilyloxy)-2,2,3,3,6,8,8,13,13,14,14-undecamethyl-4,12-dioxa-3,13-disilapentadecan-7-one | 914455-87-1 | C33H73NO4Si3 | 632.203 |
| —— | 11-azido-1,3,7-tris-(tert-butyl-dimethyl-silanyloxy)-4,4,6,8-tetramethyl-undecan-5-one | 914455-95-1 | C33H71N3O4Si3 | 658.201 |
12-Aza-epothilones ('Azathilones') 1 and 2 have been prepared through ring-closing olefin metathesis or macrolactonization-based cyclization reactions. While RCM of the respective dienes 9 and 12 was found to be very effective and produced macrocyclic olefins with high E selectivity, the subsequent reduction of the 9,10-double bond proved to be unexpectedly difficult and low-yielding. Preparation of azathilone 2 was also accomplished via macrolactonization and this approach was found to be more effective. Compound 2 is a highly potent inhibitor of human cancer cell growth in vitro. The activity of this analog is comparable with that of Epo A, both in terms of cytotoxicity against drug-sensitive human cancer cells as well as its tubulin-polymerizing activity. However, in contrast to Epo A, 2 is considerably less potent against multidrug-resistant cancer cells.