Author

2 article(s) from Lopp, Margus

Designed whole-cell-catalysis-assisted synthesis of 9,11-secosterols

Marek Kõllo,
Marje Kasari,
Villu Kasari,
Tõnis Pehk,
Ivar Järving,
Margus Lopp,
Arvi Jõers and
Tõnis Kanger

Full Research Paper
Published 01 Mar 2021

PDF
Album
1. Graphical Abstract
2. Figure 1: A) Tetracyclic core of steroids and possible sites of bond cleavages for secosteroids. B)The first ...
  
  Jump to Figure 1
3. Scheme 1: Retrosynthetic analysis of 9,11-secosterols.
  
  Jump to Scheme 1
4. Scheme 2: Synthesis of starting materials. Reagents and conditions: i) NaBH₄, EtOH/CH₂Cl₂ 1:1, 2 h, rt, then ...
  
  Jump to Scheme 2
5. Scheme 3: Oxidation of diols 5 and 6 with NaOCl·5H₂O.
  
  Jump to Scheme 3
Supp. Info

Graphical Abstract

Beilstein J. Org. Chem. 2021, 17, 581–588, doi:10.3762/bjoc.17.52

Full Text

Organocatalytic asymmetric addition of malonates to unsaturated 1,4-diketones

Sergei Žari,
Tiiu Kailas,
Marina Kudrjashova,
Mario Öeren,
Ivar Järving,
Toomas Tamm,
Margus Lopp and
Tõnis Kanger

Full Research Paper
Published 04 Sep 2012

PDF
Album
1. Graphical Abstract
2. Figure 1: The conjugated addition to unsaturated 1,4-diketone 1.
  
  Jump to Figure 1
3. Figure 2: Organocatalysts screened.
  
  Jump to Figure 2
4. Figure 3: Proposed transition state.
  
  Jump to Figure 3
5. Figure 4: Calculated (red) and experimental (blue) IR (A) and VCD spectrum (B) of compound (R)-3a.
  
  Jump to Figure 4
Supp. Info

Graphical Abstract

Beilstein J. Org. Chem. 2012, 8, 1452–1457, doi:10.3762/bjoc.8.165

Full Text

Other Beilstein-Institut Open Science Activities

Keep Informed

RSS Feed

Subscribe to our Latest Articles RSS Feed.

Subscribe

Email Notification

Register and get informed about new articles.

Register

Follow the Beilstein-Institut

Twitter: @BeilsteinInst