Palladium-catalyzed oxidative cross-coupling of azole-4-carboxylates with indoles: an approach to the synthesis of pimprinine
作者:Haipin Zhou、Kuo Gai、Aijun Lin、Jinyi Xu、Xiaoming Wu、Hequan Yao
DOI:10.1039/c4ob01844c
日期:——
An efficient and straightforward method for the production of 5-(3-indolyl)azoles incorporating the privileged structures indoles and azoles via palladium-catalyzed double C-H bond cleavage under mild conditions was disclosed. As expected, this protocol provided an easy method for the synthesis of indolealkaloids pimprinine and WS-30581 A in moderate yields.
Synthesis of Oxazolylindolyl Alkaloids via Rhodium Carbenoids
作者:Kevin J. Doyle、Christopher J. Moody
DOI:10.1055/s-1994-25627
日期:——
The oxazolylindole alkaloids pimprinine (1a), pimprinethine (1b) and WS-30581 A (1c) are readily obtained in two steps by rhodium(II) catalysed reaction of N-Boc-3-diazoacetylindole with the appropriate nitrile followed by removal of the Boc-group.
One-pot total synthesis: the first total synthesis of chiral alkaloid pimprinol A and the facile construction of its natural congeners from amino acids
In this work, we accomplished the first total synthesis of chiral alkaloid pimprinol A and the facile construction of its natural congeners: pimprinine, pimprinethine, pimprinaphine, WS-30581A, WS-30581B, laboradorin 1, uguenenazole, balsoxine, texamine in one-potfrom commercially available starting materials including amino acids. Further investigating into the mechanism revealed that this improved
Synthesis of 5-(3-indolyl)oxazole natural products. Structure revision of Almazole D
作者:Fumiko Miyake、Michinao Hashimoto、Sorasaree Tonsiengsom、Kenichi Yakushijin、David A. Horne
DOI:10.1016/j.tet.2010.03.109
日期:2010.6
The synthesis and utility of β-oxotryptamine and β-oxytryptophan ester synthons provide a convenient entry to 5-(3-indolyl)oxazole natural products leading to a structure revision of almazole D.