𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Three-component coupling synthesis of prostaglandins. A simplified, general procedure

✍ Scribed by Masaaki Suzuki; Yasushi Morita; Hiroshi Koyano; Masahiro Koga; Ryoji Noyori


Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
892 KB
Volume
46
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

✦ Synopsis


In the presence of dtmethylzinc. (R)-tert-butyldimethylstloxy-2cyclopentenone can be linked with (S.E)-1-lithio-3-tert-butyldimethylsiloxy-1 -octene and methyl 7-iodo-5-heptynoate.

giving a protected 5,6didehydroprostaglandin E2. Use of an o side-chain aldehyde or nitroalkene in place of the propargylic iodide affords the C-7 and C-6 functionalized prostaglandins, respectively.

This new protocol constitutes the simplest three-component method for the synthesis of various natural and unnatural prostaglandins.


πŸ“œ SIMILAR VOLUMES


A facile synthesis of (βˆ’)-prostaglandin
✍ M. Suzuki; T. Kawagishi; T. Suzuki; R. Noyori πŸ“‚ Article πŸ“… 1982 πŸ› Elsevier Science 🌐 French βš– 307 KB

A very short synthesis of choral prostaglandln El methyl ester 1s described.. Although a number of efflclent synthetic routes to prostaglandlns (PGs) have been explored, 495 the three-component couphng process , VIZ., consecutive lntroductlon of the two side-chans to 4hydroxy-Z-cyclopentenone, 1s ev

Synthesis of prostaglandin D1 and D2 via
✍ M. Suzuki; A. Yanagisawa; R. Noyori πŸ“‚ Article πŸ“… 1984 πŸ› Elsevier Science 🌐 French βš– 235 KB

1384 OC, 21 h) was followed by reduction with excess tributyltin hydride-di-tert-butyl peroxide (50 "C, 7.5 h)" to give the deoxygenated, acetylenic ketone \_ (85%. [ CLI i6 -46.1" (2 0.375. CH30H)). Subsequent stereoselective reduction with diisobutylaluminum hydride modified by 2, 6-di-tert-butyl-

Sequential Couplingβ€”Isomerizationβ€”Coupli
✍ Wei-Wei Liao; Thomas J. J. Mueller πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons βš– 26 KB πŸ‘ 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

ChemInform Abstract: Synthesis of Vinyl
✍ Martin W. Rowbottom; Neil Mathews; Timothy Gallagher πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 28 KB πŸ‘ 1 views

Synthesis of Vinyl Epoxides via a Three-Component Coupling. -A one-pot procedure for the preparation of title compounds such as (IV), which are interesting synthetic intermediates, is presented. The synthesis of the key reagent (II) is described. -(ROWBOTTOM, MARTIN W.; MATHEWS,