<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">More, V. Ganesh</style></author><author><style face="normal" font="default" size="100%">Malekar, V. Pushpa</style></author><author><style face="normal" font="default" size="100%">Kalshetti, Rupali G.</style></author><author><style face="normal" font="default" size="100%">Shinde, Mahesh H.</style></author><author><style face="normal" font="default" size="100%">Ramana, V. Chepuri</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Ru-catalyzed asymmetric transfer hydrogenation of alpha-acyl butyrolactone via dynamic kinetic resolution: asymmetric synthesis of bis-THF alcohol intermediate of darunavir</style></title><secondary-title><style face="normal" font="default" size="100%">Tetrahedron Letters</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Bis-THF-OH intermediate</style></keyword><keyword><style  face="normal" font="default" size="100%">Darunavir</style></keyword><keyword><style  face="normal" font="default" size="100%">Dynamic kinetic resolution</style></keyword><keyword><style  face="normal" font="default" size="100%">Ru-catalysis</style></keyword><keyword><style  face="normal" font="default" size="100%">transfer hydrogenation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2021</style></year><pub-dates><date><style  face="normal" font="default" size="100%">MAR </style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">66</style></volume><pages><style face="normal" font="default" size="100%">152831</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;The Ru-catalyzed enantio- and diastereoselective dynamic kinetic resolution of alpha-(benzyloxy/benzoyloxy)acyl-gamma-butyrolactones has been examined via transfer hydrogenation. Employing the in situ prepared (R,R)-Ru-FsDPEN catalyst, the transfer hydrogenation of using formic acid/triethylamine at rt gave the corresponding (S)-3-((S)-2-(benzyloxy/benzoyloxy)-1-hydroxyethyl)dihydrofuran-2(3H)-on e with good to excellent diastereo- and enantioselectivity. One of the resulting hydrogenation product prepared on gram scales was utilized for the synthesis of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol (1), a key synthetic intermediate of various HIV protease inhibitors such as darunavir with excellent enantio-(95% ee) and diastereoselectivities (dr 95:5). (C) 2021 Elsevier Ltd. All rights reserved.&lt;/p&gt;
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</style></custom3><custom4><style face="normal" font="default" size="100%">&lt;p&gt;2.275&lt;/p&gt;
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