scholarly journals Acremolin from Acremonium strictum is N2,3-Etheno-2′-isopropyl-1-methylguanine, not a 1H-Azirine. Synthesis and Structural Revision

2013 ◽  
Vol 15 (10) ◽  
pp. 2370-2373 ◽  
Author(s):  
Lawrence A. Januar ◽  
Tadeusz F. Molinski
Keyword(s):  
Acremonium Strictum ◽  
Structural Revision

Synthetic studies toward inducamide C

2021 ◽  
Author(s):  
Ardalan A. Nabi ◽  
Lydia M. Scott ◽  
Daniel P. Furkert ◽  
Jonathan Sperry
Keyword(s):  
Natural Product ◽  
Structural Revision ◽  
Synthetic Studies

The rare benzoxazepine ring in the alkaloid inducamide C is unstable and prone to rearrangement, indicating that structural revision of the natural product may be necessary.

Structure Revision of Protoaculeine B, a Posttranslationally Modified N-Terminal Residue in the Peptide Toxin Aculeine B

2020 ◽  
Author(s):  
Raku Irie ◽  
Kei Miyako ◽  
Satoko Matsunaga ◽  
Ryuichi Sakai ◽  
Masato Oikawa
Keyword(s):  
Mass Spectra ◽  
Chemical Reactivity ◽  
Model Compounds ◽  
Structural Revision ◽  
Structure Revision ◽  
Peptide Toxin ◽  
One Step ◽  
Marine Peptide ◽  
Synthetic Models ◽  
Long Chain

<div>Here, we newly propose the structure of protoaculeine B, an N-terminal moiety of the marine peptide toxin aculeine B, as possessing the cis-disubstituted tetrahydro-beta-carboline framework. We prepared two truncated model compounds that lack long-chain polyamine by one-step Pictet-Spengler reaction of tryptophan, and compared the NMR and mass spectra and chemical reactivity with those of natural protoaculeine B. The synthetic models reproduced the profiles of the natural product well, which was conclusive for the structural revision.</div>

Total Synthesis of (+)-Granatumine A and Related Bislactone Limonoid Alkaloids via a Pyran to Pyridine Interconversion

2019 ◽  
Author(s):  
Timothy Newhouse ◽  
Alexander Schuppe ◽  
Yizhou Zhao ◽  
Yannan Liu
Keyword(s):  
Total Synthesis ◽  
Inhibitory Activity ◽  
Knoevenagel Condensation ◽  
Cost Effective ◽  
Effective Procedure ◽  
Direct Transformation ◽  
Structural Revision ◽  
Alpha Beta ◽  
Ptp 1B

We report the first total synthesis of (+)-granatumine A, a limonoid alkaloid with PTP-1B inhibitory activity, in 10 steps. Over the course of this study, two key methodological advances were made: a cost effective procedure for ketone alpha,beta-dehydrogenation using allyl-Pd catalysis, and a Pd-catalyzed protocol to convert epoxyketones to 1,3-diketones. The central tetrasubstituted pyridine is formed by a convergent Knoevenagel condensation and carbonyl-selective electrocyclization cascade, which was followed by a direct transformation of a 2<i>H</i>-pyran to a pyridine. These studies have led to the structural revision of two members of this family.

Synthesis and Structural Revision of Glyphaeaside C

2021 ◽  
Author(s):  
Brendan J. Byatt ◽  
Atsushi Kato ◽  
Stephen G. Pyne
Keyword(s):  
Structural Revision

Structural revision of methyl tortuoate D, abis-cembranoid from HainanSarcophyton tortuosumand its absolute stereochemistry

2013 ◽  
Vol 15 (5) ◽  
pp. 566-573 ◽  
Author(s):  
Yu-Fen Li ◽  
Ling-Li He ◽  
Hai-Li Liu ◽  
Lin-Fu Liang ◽  
Hong-Bin Zhang ◽  
...  
Keyword(s):  
Structural Revision ◽  
Absolute Stereochemistry

Polyketides from the mangrove-derived endophytic fungus Acremonium strictum

2014 ◽  
Vol 55 (24) ◽  
pp. 3463-3468 ◽  
Author(s):  
Lena Hammerschmidt ◽  
Abdessamad Debbab ◽  
Tu Duong Ngoc ◽  
Victor Wray ◽  
Catalina Perèz Hemphil ◽  
...  
Keyword(s):  
Endophytic Fungus ◽  
Acremonium Strictum

Conformation-Enabled Total Syntheses of Ohmyungsamycins A and B and Structural Revision of Ohmyungsamycin B

2018 ◽  
Vol 130 (12) ◽  
pp. 3123-3127 ◽  
Author(s):  
Joonseong Hur ◽  
Jaebong Jang ◽  
Jaehoon Sim ◽  
Woo Sung Son ◽  
Hee-Chul Ahn ◽  
...  
Keyword(s):  
Total Syntheses ◽  
Structural Revision

scholarly journals Fatal disseminated Acremonium strictum infection in a preterm newborn: a very rare cause of neonatal septicaemia

2003 ◽  
Vol 52 (9) ◽  
pp. 835-837 ◽  
Author(s):  
Mehmet Yalaz ◽  
Suleyha Hilmioglu ◽  
Dilek Metin ◽  
Mete Akisu ◽  
Deniz Nart ◽  
...  
Keyword(s):  
Preterm Newborn ◽  
Acremonium Strictum ◽  
Neonatal Septicaemia

Role of Oregano (Origanum vulgare) Essential Oil as a Surface Fungus Inhibitor on Fermented Sausages: Evaluation of Its Effect on Microbial and Physicochemical Characteristics

2012 ◽  
Vol 75 (1) ◽  
pp. 104-111 ◽  
Author(s):  
CLEMENCIA CHAVES-LÓPEZ1 ◽  
ANA MARÍA MARTIN-SAacute;NCHEZ ◽  
EVANGÉLICA FUENTES-ZARAGOZA ◽  
MANUEL VIUDA-MARTOS ◽  
JUANA FERNÁNDEZ-LÓPEZ ◽  
...  
Keyword(s):  
Essential Oil ◽  
Textural Properties ◽  
Physicochemical Characteristics ◽  
Fungal Species ◽  
Potassium Sorbate ◽  
Fermented Sausage ◽  
Acremonium Strictum ◽  
Oregano Essential Oil ◽  
Color Changes ◽  
Cladosporium Sphaerospermum

Oregano essential oil (OEO) was evaluated to determine its effect on the growth of natural contaminating molds on the surface of Spanish fermented sausage, the development of the internal microbial population of the sausage, and the physicochemical properties of the sausage. Results indicated a dramatic reduction in the contaminant molds. At the end of ripening, the main endogenous fungal species in control samples were Mucor racemosus (55%), Aspergillus fumigatus (20.6%), Cladosporium sphaerospermum (11.1%), Acremonium strictum (7.9%), and Aspergillus niger (4.7%). In samples treated with OEO, M. racemosus and A. fumigatus were the only species isolated; the treatment was more effective against A. fumigatus than against M. racemosus. The use of OEO to inhibit surface fungi did not affect the sausage drying process, pH, water activity, or color changes during ripening. These parameters change in a typical pattern for fermented dry-cured sausages during ripening. At the end of ripening, OEO-treated sausages had lower hardness and greater chewiness than the control but showed similar textural properties to sausages treated with potassium sorbate.

Total synthesis of (±) - isosesquicarene: A structural revision

1983 ◽  
Vol 24 (41) ◽  
pp. 4445-4446 ◽  
Author(s):  
Tadao Uyehara ◽  
Jun-ichi Yamada ◽  
Tadahiro Kato ◽  
Ferdinand Bohlmann
Keyword(s):  
Total Synthesis ◽  
Structural Revision
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