40835-18-5Relevant articles and documents
The first synthesis of a noreremophilane isolated from the roots of Ligularia przewalskii
Reddy, D. Srinivasa,Palani, Kalpana,Balasubrahmanyam,Kamath, Viju B.,Iqbal, Javed
, p. 5211 - 5213 (2005)
The total synthesis of a natural product noreremophilane has been achieved in just three steps from readily available starting materials. A highly stereo- and regio-selective Diels-Alder reaction was the key step in our synthesis.
Simple and versatile synthesis of branched polyols: (+)-2-C-methylerythritol and (+)-2-C-methylthreitol
Fontana,Messina,Spinella,Cimino
, p. 7559 - 7562 (2007/10/03)
The paper reports a new approach for the enantioselective synthesis of 2-C-methyl tetrols. The procedure has been utilized for preparing methylthreitol and methylerythritol, a putative intermediate in the mevalonate-independent biosynthesis of terpenoids in bacteria, algae and higher plants. The methodology offers straightforward access to related compounds and isotopically labeled derivatives. (C) 2000 Elsevier Science Ltd.
Process for producing branched aldehydes
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, (2008/06/13)
It is provided a process for industrially advantageously producing a branched aldehyde represented by the formula; STR1 ?wherein Y represents an acyl group of two or more carbon atoms; and X represents an acyloxymethyl group represented by --CH2/sub
Studies of the Synthesis of Tetronolide. Synthesis of a Spiro-α-acyltetronic Acid Model
Takeda, Kei,Shibata, Yumiko,Sagawa, Yukihiro,Urahata, Makoto,Funaki, Keishi,et al.
, p. 4673 - 4681 (2007/10/02)
The top half models 11 and 25 of the antibiotic aglycone tetronolide (1) were prepared from tetrahydrophthalide and 2,4-hexadiene-1,6-diol in 8 and 12 steps, respectively.Compound 11 was coupled with the bottom half model 30a, which was prepared via Diels-Alder reaction of methacrolein with triene 27a or 33a to afford α-acyltetronate 38.The allyl chloride 39 derived from 38 was rather unstable, and attempts for macrocyclization resulted in decomposition of the key intermediate.
A Flexible and Efficient Synthesis of Methyl 4-Oxo-2-alkenoates
Reichelt, Ingrid,Reissig, Hans-Ulrich
, p. 820 - 827 (2007/10/02)
The title compounds E are obtained in good yield by low temperature ring cleavage of the easily available methyl 2-siloxycyclopropanecarboxylates C with bromine and subsequent elimination of hydrogen bromide.Due to the variability of C a high flexibility concerning substituents R1 - R4 in products E is guaranteed. 2-Alkyl- and 2-methylthio-substituted olefins are thus effectively synthesized.In several cases the initially formed methyl 2-bromo-4-oxoalkanoates F are stable enough to be isolated in high yield.