6 article(s) from Rabe, Patrick
Graphical Abstract
Scheme 1: Germacrene A (1) and its Cope rearrangement to β-elemene (2).
Figure 1: In vitro terpene synthase activity of the investigated recombinant enzyme from C. pinensis, showing...
Scheme 2: Product obtained from the diterpene synthase from C. pinensis. (A) Structure of (1R,3E,7E,11S,12S)-...
Figure 2: Determination of the absolute configuration of 3. (A) Partial HSQC spectrum of unlabelled 3 showing...
Figure 3: Determination of the absolute configuration of 3. (A) Partial HSQC spectrum of unlabelled 3 showing...
Figure 4: Assignment of H6α and H6β of 3. (A) Partial HSQC spectrum of unlabelled 3 showing the region for C6...
Figure 5: Partial 13C NMR spectra of A) unlabeled 3, B) (13C1)-3 arising from incubation of HdS and GGPPS wit...
Figure 6: Transient expression of 18-hydroxydolabella-3,7-diene synthase (HdS) in Nicotiana benthamiana. Tota...
Graphical Abstract
Figure 1: Selection of achiral terpenes.
Scheme 1: Cyclisation of GPP to 1 via the (R)-terpinyl cation ((R)-6, left) or the (S)-terpinyl cation ((S)-6...
Figure 2: Partial HSQC spectra showing the region of crosspeaks for HA and HB connected to C-3 and C-5 of A) ...
Figure 3: A) Partial HSQC spectrum showing the region of crosspeaks of C-2 with its directly connected hydrog...
Scheme 2: Mechanism for the cyclisation of FPP to corvol ethers A (19) and B (18). WMR: Wagner-Meerwein rearr...
Graphical Abstract
Figure 1: Structures of sesquiterpenes obtained by incubation of FPP with bacterial sesquiterpene cyclases.
Figure 2: Contiguous spin systems observed by 1H,1H-COSY (bold), key HMBC and NOE correlations for a) α-amorp...
Figure 3: Contiguous spin systems observed by 1H,1H-COSY (bold), key HMBC and NOE correlations for a) 7-epi-α...
Scheme 1: Biosynthetic pathway from FPP to 7-epi-α-eudesmol (4).
Figure 4: Incubation experiments with (6-13C)FPP and the 7-epi-α-eudesmol synthase in deuterium oxide. a) 13C...
Figure 5: Incubation experiments with (13-13C)FPP. 13C NMR spectra of a) unlabelled 1 and (13-13C)-1, b) unla...
Graphical Abstract
Scheme 1: Structures of corvol ethers A (1) and B (2), epi-cubebol (3), and isodauc-8-en-11-ol (4). Carbon nu...
Figure 1: Mass spectra of unlabelled 1 and all fifteen positional isomers of (13C1)-1.
Scheme 2: PMAs and EIMS fragmentation mechanisms for the fragment ions A) m/z = 179, B) m/z = 161, C) m/z = 1...
Figure 2: Mass spectra of unlabelled 2 and all fifteen positional isomers of (13C1)-2.
Scheme 3: PMAs and EIMS fragmentation mechanisms for the fragment ions A) m/z = 179, B) m/z = 161, C) m/z = 1...
Figure 3: Mass spectra of unlabelled 3 and all fifteen positional isomers of (13C1)-3.
Scheme 4: PMAs and EIMS fragmentation mechanisms for the fragment ions A) m/z = 207, B) m/z = 179, C) m/z = 1...
Figure 4: Mass spectra of unlabelled 4 and all fifteen positional isomers of (13C1)-4.
Scheme 5: PMAs and EIMS fragmentation mechanisms for the fragment ions A) m/z = 207, B) m/z = 189, C) m/z = 1...
Graphical Abstract
Figure 1: TDA and related natural products from Phaeobacter inhibens.
Scheme 1: Synthesis of tropone-2-carboxylic acid (13).
Scheme 2: Synthesis of halogenated TDA analogues.
Scheme 3: Further compounds included in this SAR study.
Graphical Abstract
Figure 1: Total ion chromatogram of a CLSA headspace extract from Geniculosporium.
Figure 2: Mass spectra of A) the chlorinated volatile X and B) the chlorinated volatile Y.
Figure 3: Constitutional isomers of chlorodimethoxybenzene as candidate structures for X.
Scheme 1: Synthesis of chlorodimethoxybenzenes as reference compounds for X.
Figure 4: Constitutional isomers of dichlorodimethoxybenzene as candidate structures for Y.
Scheme 2: Synthesis of chlorodimethoxybenzenes as reference compounds for Y.
Figure 5: Known natural products that are structurally related to 4b and 10b from Geniculosporium.
Figure 6: Total ion chromatograms of headspace extracts from S. chartreusis. A) Growth on 84 GYM showing prod...
Figure 7: Calicheamicin, a known iodinated compound from the actinomycete Micromonspora echinospora.