Results 141 to 150 of about 2,222 (186)

Stereoselective synthesis of the pyran subunit of portentol

Organic & Biomolecular Chemistry
A concise synthesis of the pyran core of portentol was established in nine steps, involving an asymmetric lactate-anti-aldol reaction, selective lactol formation and a Corey–Winter elimination that proceeds with excellent diastereoselectivity.
Tan Hoang Luu, Florian Heppner, Johal Ruiz, Dirk Menche   +3 more
openaire   +2 more sources

Immunopharmacology of pyran copolymer

Pharmacological Research Communications, 1978
P, Puccetti, A, Giampietri
openaire   +2 more sources

Pyran derivatives

Il Farmaco, 2003
Mario Di Braccio, Giancarlo Grossi, Giorgio Roma, Cristina Marzano, Franca Baccichetti, Morena Simonato, Franco Bordin   +6 more
openaire   +1 more source

Review on Synthesis and Medicinal Application of Dihydropyrano[3,2-b]Pyrans and Spiro-Pyrano[3,2-b]Pyrans by Employing the Reactivity of 5-Hydroxy-2-(Hydroxymethyl)-4H-Pyran-4-One

Polycyclic Aromatic Compounds, 2022
Biplob Borah, Kartikey Dhar Dwivedi, L Raju Chowhan   +2 more
exaly  

Investigation of positron scattering from 2H-pyran, 4H-pyran, and pyrrole molecules

Journal of Physics B: Atomic, Molecular and Optical Physics
Abstract The scattering cross-sections for positron-biomolecule interaction are an essential input for the Monte-Carlo simulation techniques. In the present work, we have reported the elastic integral, differential, momentum transfer, and total ionization cross-sections for scattering of positron from 2H-pyran, 4H-pyran, and pyrrole ...
Snigdha Sharma, Dhanoj Gupta
openaire   +1 more source

Aroxydihydro pyrans

Chemistry of Heterocyclic Compounds, 1970
G. G. Skvortsova, V. G. Kozyrev
openaire   +1 more source

A facile and efficient synthesis of tetrahydrobenzo[b]pyrans and dihydropyrano[4,3-b]pyrans derivatives using phosphate fertilizers MAP, DAP, and TSP as heterogeneous catalysts

Journal of the Iranian Chemical Society, 2021
Soukaïna Chehab, Youssef Merroun, Tourya Ghailane   +2 more
exaly  

Pyrans and Fused Pyrans: (i) Structure

1984
P.J. Brogden, C.D. Gabbutt, J.D. Hepworth   +2 more
openaire   +1 more source

pyran, n.

2023
openaire   +1 more source

Photoisomerization of 4H-pyran-4-ones to 2H-pyran-2-ones

Journal of the American Chemical Society, 1973
Nobuyuki. Ishibe, Masami. Sunami, Masao. Odani   +2 more
openaire   +1 more source