Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Martin, E"'
Publikováno v:
Organic Letters. 22:2313-2317
The syntheses of peptidoglycan (PG)-derived peptides containing meso-diaminopimelic acid (meso-Dap) are typically quite lengthy due to the need to prepare orthogonally protected meso-Dap. In this work, the preparation of the PG pentapeptide containin
Publikováno v:
Organic letters. 22(6)
The syntheses of peptidoglycan (PG)-derived peptides containing
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Autor:
Martin E. Maier, Anita Reiss
Publikováno v:
Organic Letters. 18:3146-3149
The macrocyclic core (35) of the marine natural product leiodermatolide (1) was synthesized from two key fragments, vinyl iodide 23 (C1-C11 part) and vinyl stannane 31 (C12-C18 part). A Stille coupling led to conjugated Z,Z-diene 32. The derived seco
Publikováno v:
Organic Letters. 15:2474-2477
A novel strategy to N-Boc-N-methyl--tryptophans (abrine derivatives) was developed that relies on the palladium-catalyzed annulation of ortho-iodoanilines 12 with either N-Boc-N-methyl-propargylglycine 16 or aldehyde 11. Both 11 and 16 can be prepare
Publikováno v:
Organic Letters. 13:2334-2337
The synthesis of the 16-membered core structure of leiodermatolide 40 has been achieved in 26 linear steps starting from (R)-Roche ester. The key steps in the synthesis of 40 are a Stille cross-coupling between two main fragments 11 and 33 having rou
Publikováno v:
Organic Letters. 12:3418-3421
A cyclic carbonyl ylide with a trans-annulated cyclopentane ring was generated by a Rh(2)(OAc)(4)-catalyzed reaction from a diazoketone precursor and trapped with allyl propiolate. The 1,3-dipolar cycloaddition led to the stereoselective formation of
Autor:
Gedu Satyanarayana, Martin E. Maier
Publikováno v:
Organic Letters. 10:2361-2364
The reaction of piperdin-2-ones with a 2-bromobenzyl substituent in the 5-position in the presence of a palladium catalyst leads to biaryl compounds. Their formation can be explained via initial C-H insertion of the aryl palladium species into the al
Autor:
Martin E. Maier, Georgy N. Varseev
Publikováno v:
Organic Letters. 9:1461-1464
[reaction: see text] The enantioselective total synthesis of (+)-neosymbioimine was accomplished in 18 steps from (-)-(S)-citronellol utilizing an organocatalytic alpha-oxidation of aldehyde 6. The carbon core was constructed by a tandem Horner-Wadsw
Publikováno v:
Organic Letters. 8:1629-1632
[reaction: see text] A new approach to complex chiral diols and polyols is described utilizing a tandem hydroboration/Suzuki cross-coupling reaction. This method utilizes the versatility of a glycolate-derived chiral template.