An enantioselective synthesis of the spirotetronate subunit of kijanolide
摘要:
The Diels-Alder adduct 11 of alpha-bromoacrolein and triene 9 was converted to spirotetronate 21 through a sequence involving Pummerer rearrangement of the derived sulfoxide 16, oxidation of the resulting aldehyde 17, and Dieckmann cyclization of the diester 19 followed by in situ quench with MOMCl.
A General Procedure for the Preparation of β-Ketophosphonates
作者:Kevin M. Maloney、John Y. L. Chung
DOI:10.1021/jo901552k
日期:2009.10.2
A mild, high-yielding procedure for the preparation of β-ketophosphonates is described. The condensation is general with respect to the ester and phosphonate, and the products are obtained in high yields within minutes at 0 °C. The reaction procedure is operationally simple and amenable to large-scale preparations.
[EN] GLUCOSYLCERAMIDE SYNTHASE INHIBITORS<br/>[FR] INHIBITEURS DE SYNTHASE DE GLUCOSYLCÉRAMIDE
申请人:GENZYME CORP
公开号:WO2014043068A1
公开(公告)日:2014-03-20
The invention relates to inhibitors of glucosylceramide synthase (GCS) useful for the treatment of metabolic diseases, such as lysosomal storage diseases, either alone or in combination with enzyme replacement therapy, cystic disease and for the treatment of cancer.
Stereoselectivity in intramolecular diyl trapping reactions. Model studies directed toward the phorbols.
作者:Jim I. McLoughlin、Ramani Brahma、Onorato Campopiano、R. Daniel Little
DOI:10.1016/s0040-4039(00)88810-3
日期:1990.1
The intramolecular diyltrappingreactions, 7 → 9 and 8 → 10, proceeded reproducibly, in high yield, and with control of both relative and absolute stereochemistry at six contiguous stereogenic centers.
achieved the totalsynthesis of the proposedstructure of characellide B, a novel lipoglycotripeptide. Comparison of the data for the synthetic compound with those for the natural product indicated some possible errors in the original structural assignment. Furthermore, we synthesized the other four stereoisomers, focusing on the d-Asp-d-allo-Thr fragment, to determine the actual structure of characellide
我们实现了 characellide B 结构的全合成,这是一种新型的脂糖三肽。合成化合物数据与天然产物数据的比较表明原始结构分配中可能存在一些错误。此外,我们合成了其他四种立体异构体,重点是d -Asp- d - allo -Thr 片段,以确定 characellide B 的实际结构。然而,立体异构体的数据与天然产物的数据不一致。
GLUCOSYLCERAMIDE SYNTHASE INHIBITORS
申请人:GENZYME CORPORATION
公开号:US20150210681A1
公开(公告)日:2015-07-30
The invention relates to inhibitors of glucosylceramide synthase (GCS) useful for the treatment of metabolic diseases, such as lysosomal storage diseases, either alone or in combination with enzyme replacement therapy, cystic disease and for the treatment of cancer.