Cyclodextrin-based Schiff base pro-fragrances: Synthesis and release studies

• Attila Palágyi,
• Jindřich Jindřich,
• Juraj Dian and
• Sophie Fourmentin

Beilstein J. Org. Chem. 2022, 18, 1346–1354, doi:10.3762/bjoc.18.140

• Cannizaro’s reaction. At pH 12.80, the benzaldehyde was fully converted to benzyl alcohol and benzoic acid after 5 days. Static headspace analysis We first determined the Henry law constants and the formation constants with β-CD of three selected aldehydes (Table 1). As can be seen from Table 1, the studied

Identification of volatiles from six marine Celeribacter strains

• Anuj Kumar Chhalodia,
• Jan Rinkel,
• Dorota Konvalinkova,
• Jörn Petersen and
• Jeroen S. Dickschat

Beilstein J. Org. Chem. 2021, 17, 420–430, doi:10.3762/bjoc.17.38

• that some of the detected sulfur compounds are not or only partly of bacterial origin. Results and Discussion Headspace analysis The volatiles released by six marine Celeribacter type strains, including C. marinus DSM 100036T, C. neptunius DSM 26471T, C. manganoxidans DSM 27541T, C. baekdonensis DSM

Volatiles from the hypoxylaceous fungi Hypoxylon griseobrunneum and Hypoxylon macrocarpum

• Jan Rinkel,
• Alexander Babczyk,
• Tao Wang,
• Marc Stadler and
• Jeroen S. Dickschat

Beilstein J. Org. Chem. 2018, 14, 2974–2990, doi:10.3762/bjoc.14.277

• identifiable by comparison to all the possible constitutional isomers with different ring substitution patterns. Results and Discussion Headspace analysis The volatiles released by agar plate cultures of H. griseobrunneum and H. macrocarpum were collected using a CLSA [13]. After a collection time of one day

Volatiles from the tropical ascomycete Daldinia clavata (Hypoxylaceae, Xylariales)

• Tao Wang,
• Kathrin I. Mohr,
• Marc Stadler and
• Jeroen S. Dickschat

Beilstein J. Org. Chem. 2018, 14, 135–147, doi:10.3762/bjoc.14.9

• evaluation. Here, we present the identification, synthesis and bioactivities of volatiles emitted by the rare tropical hypoxylaceous ascomycete Daldinia clavata, which has hitherto been only infrequently reported from Africa and Latin America. Results and Discussion Headspace analysis The volatiles emitted

Streptopyridines, volatile pyridine alkaloids produced by Streptomyces sp. FORM5

• Ulrike Groenhagen,
• Michael Maczka,
• Jeroen S. Dickschat and
• Stefan Schulz

Beilstein J. Org. Chem. 2014, 10, 1421–1432, doi:10.3762/bjoc.10.146

• . Keywords: headspace analysis; natural products; polyketide biosynthesis; pyridine derivatives; streptazolin; volatile compounds; Introduction Actinomycetes are excellent producers of diverse and bioactive secondary metabolites. These metabolites belong to many different structural classes including

• the production of other, usually less volatile secondary metabolites and whether different compounds can be detected by headspace analysis [7] compared to commonly used solvent extraction or adsorption/extraction procedures. Strain FORM5 has been reported to produce the tetrahydrocyclopenta[b]pyridine

• structure verification. Agar plate cultures and liquid cultures were investigated and the liquid phase analyzed for the presence of secondary metabolites. The results showed that by headspace analysis new secondary metabolites can be found that eluded earlier analysis. The separate analysis of headspace and

[²H₂₆]-1-epi-Cubenol, a completely deuterated natural product from Streptomyces griseus

• Christian A. Citron and
• Jeroen S. Dickschat

Beilstein J. Org. Chem. 2013, 9, 2841–2845, doi:10.3762/bjoc.9.319

• deuterium oxide (100 equiv) followed by lyophilization. Agar that is composed of ca. 1 wt % of hydrogen atoms that are exchangable with water was added as the only unlabelled compound. The added agar (12 g L−1) is equal to ca. 1 mL of water (0.1% of the medium). Headspace analysis. For analysis of the

Space filling of β-cyclodextrin and β-cyclodextrin derivatives by volatile hydrophobic guests

• Sophie Fourmentin,
• Anca Ciobanu,
• David Landy and
• Gerhard Wenz

Beilstein J. Org. Chem. 2013, 9, 1185–1191, doi:10.3762/bjoc.9.133

• hydroxypropyl-β-CD (DS 5.6) from Wacker Chemie. β-CD derivatives 3 and 4 were synthesized from β-CD 1 following published procedures. Distilled water was used in all experiments. Headspace analysis Similar to those described in [44], measurements were conducted with an Agilent headspace autosampler. Sample

Algicidal lactones from the marine Roseobacter clade bacterium Ruegeria pomeroyi

• Ramona Riclea,
• Julia Gleitzmann,
• Hilke Bruns,
• Corina Junker,
• Barbara Schulz and
• Jeroen S. Dickschat

Beilstein J. Org. Chem. 2012, 8, 941–950, doi:10.3762/bjoc.8.106

• plating of 100 μL of liquid culture. Plates were incubated for three days and then subjected to headspace analysis. Collection of volatiles. The volatiles released by the R. pomeroyi agar plate cultures were collected by use of a closed-loop stripping apparatus (CLSA) as described previously [24]. The