Stereoselective total synthesis of polyketide lactone, (3R,4S,5S,9S)-3,5,9-trihydroxy-4-methylundecanoic acid δ-lactone
摘要:
The total synthesis of lactone I has been described. The convergent asymmetric synthesis relies on the use of an Evans' syn-aldol, chain extension with lithio tert-butyl acetate, and the stereoselective reduction of a ketone as the key reactions. (C) 2009 Published by Elsevier Ltd.
Rhodium-Catalyzed Regio- and Enantioselective Addition of <i>N</i>-Hydroxyphthalimide to Allenes: A Strategy To Synthesize Chiral Allylic Alcohols
作者:Zi Liu、Bernhard Breit
DOI:10.1021/acs.orglett.7b03709
日期:2018.1.5
We achieved the first Rh-catalyzed regio- and enantioselectiveadditions of N-hydroxyphthalimide to allenes. This transformation is accomplished via mild reaction conditions, leveraging on Josiphos SL-J003-2 as a chiral ligand to furnish branched O-allyl compounds in good yields with moderate to excellent enantioselectivities. The substrate scope is broad, and various functional groups are tolerated
Stereoselective total synthesis of polyketide lactone, (3R,4S,5S,9S)-3,5,9-trihydroxy-4-methylundecanoic acid δ-lactone
作者:Gowravaram Sabitha、Peddabuddi Gopal、Jhillu S. Yadav
DOI:10.1016/j.tetasy.2009.06.008
日期:2009.7
The total synthesis of lactone I has been described. The convergent asymmetric synthesis relies on the use of an Evans' syn-aldol, chain extension with lithio tert-butyl acetate, and the stereoselective reduction of a ketone as the key reactions. (C) 2009 Published by Elsevier Ltd.
The First Stereoselective Total Synthesis of Putaminoxin E and Its Epimer and Evaluation of Their Biological Properties
作者:Chithaluri Sudhakar、Parigi Raghavendar Reddy、Chityal Ganesh Kumar、Pombala Sujitha、Biswanath Das
DOI:10.1002/ejoc.201101601
日期:2012.2
PutaminoxinE, a natural nonanolide, and its C-9 epimer were synthesized for the first time starting from pentane-1,5-diol and butyraldehyde. The synthetic sequences involve Maruoka asymmetric allylation, Sharpless kinetic resolution, and ring-closing metathesis as the key steps. The cytotoxic and antimicrobial activities of these compounds were evaluated.
首次以戊烷-1,5-二醇和丁醛为原料合成了一种天然壬烯醇胺类化合物 Putaminoxin E 及其 C-9 差向异构体。合成序列涉及 Maruoka 不对称烯丙基化、Sharpless 动力学拆分和闭环复分解作为关键步骤。评估了这些化合物的细胞毒性和抗微生物活性。