Results 91 to 100 of about 67,862 (282)

Synthetic Studies Directed Toward Streptenol D: Enantioselective Preparation of the 3,5-diacetoxy-6\u3cem\u3eE\u3c/em\u3e,8\u3cem\u3eE\u3c/em\u3e-decadiene Segment [PDF]

, 1998
The enantioselective preparation of 2-(3′R,5′R-diacetoxy-6E,8E-decadienyl)-1,3-dioxane, (+)-13, is described. This synthesis of the skeleton of streptenol D utilizes the ability of a diene-complexed (tricarbonyl)iron unit to serve as a protecting and ...
Dasgupta, Bireshwar, Donaldson, William
core   +1 more source

Forging Fluorine-Containing Quaternary Stereocenters by a Light-Driven Organocatalytic Aldol Desymmetrization Process [PDF]

, 2017
Reported herein is a light-triggered organocatalytic strategy for the desymmetrization of achiral 2-fluoro-substi- tuted cyclopentane-1,3-diketones.
Ametamey, Balaraman, Banik, Beeson, Borissov, Brak, Brimioulle, Brunet, Dell'Amico, Dell'Amico, Eagan, Eder, Erb, Ford, Hajos, Hamashima, Hepburn, Hintermann, Ishimaru, Jeschke, Jiang, Kalow, Kalow, Katcher, Katcher, Klán, Kwiatkowski, Lozano, Ma, Marigo, Müller, Nakamura, O'Hagan, Partridge, Prakash, Prévost, Purser, Rauniyar, Reisman, Saadi, Sammes, Steiner, Taylor, Woerly, Yang, Yang, Yang, Zeng, Zhu, Zuend   +49 more
core   +2 more sources

Catalytic enantioselective construction of axial chirality in 1,3-disubstituted allenes

Nature Communications, 2019
Highly enantioselective synthesis of allenes has been relying, so far, on the steric hindrance of substrates. Here the authors achieve excellent stereocontrol in the synthesis of chiral allenes with a palladium-DTBM-SEGPHOS catalytic system in a non ...
Shihua Song, Jing Zhou, Chunling Fu, Shengming Ma   +3 more
doaj   +1 more source

Asymmetric preparation of antifungal 1-(4 -chlorophenyl)-1-cyclopropyl methanol and 1-(4 -chlorophenyl)-2-phenylethanol. Study of the detoxification mechanism by Botrytis cinerea [PDF]

, 2011
Chiral alcohols are important as bioactive compounds or as precursors to such molecules. On the basis of the different antifungal properties of the enantiopure alcohol derivatives of 4-chlorophenyl cyclopropyl ketone and benzyl 4-chlorophenyl ketone ...
Aleu Casatejada, Josefina, Bustillo Pérez, Antonio, González Collado, Isidro, Hernández Galán, Rosario, Pinedo Rivilla, Cristina   +4 more
core   +2 more sources

Algicidal lactones from the marine Roseobacter clade bacterium Ruegeria pomeroyi

Beilstein Journal of Organic Chemistry, 2012
Volatiles released by the marine Roseobacter clade bacterium Rugeria pomeroyi were collected by use of a closed-loop stripping headspace apparatus (CLSA) and analysed by GC–MS.
Ramona Riclea, Julia Gleitzmann, Hilke Bruns, Corina Junker, Barbara Schulz, Jeroen S. Dickschat   +5 more
doaj   +1 more source

Pd-catalyzed enantioselective aerobic oxidation of secondary alcohols: Applications to the total synthesis of alkaloids [PDF]

, 2008
Enantioselective syntheses of the alkaloids (-)-aurantioclavine, (+)-amurensinine, (-)-lobeline, and (-)- and (+)-sedamine are described. The syntheses demonstrate the effectiveness of the Pd-catalyzed asymmetric oxidation of secondary alcohols in ...
Bagdanoff, Jeffrey T., Ebner, David C., Krishnan, Shyam, Ramtohul, Yeeman K., Stoltz, Brian M., Tambar, Uttam K.   +5 more
core   +2 more sources

Atomically precise metal cluster enzymes for pathological tissue regeneration

BMEMat, EarlyView.
Schematic illustration of atomically precise metal cluster enzymes (MCEs) for pathological tissue regeneration. Atomically precise MCEs can modulate biological processes, such as attenuation of inflammatory responses, eradication of bacterial pathogens, regulation of angiogenesis, and promotion of cell development.
Ziqiang Xiong, Zhifeng Shi, Mengqing Li, Jien Han, Haoyan Chen, Maofei Ran, Shaojian Zhong, Limin Ma, Chengyun Ning, Youzhun Fan, Zhenghua Tang, Peng Yu   +11 more
wiley   +1 more source

Total synthesis of 4-((3S,5R)-3,5- dihydroxynonadecyl)phenol

Results in Chemistry
This communication describes a short and effective synthetic route for the enantioselective synthesis of 4-((3S,5R)-3,5-dihydroxynonadecyl)phenol. Key steps in this synthesis include the Wittig reaction, Barbier allylation, and Sharpless dihydroxylation.
Krishnaiah Kumari, Subhashini Muvvala, Abdulrhman Alsayari, Annapurna Nowduri, Nalla Somaiah, Abhishek Shankar Saxena   +5 more
doaj   +1 more source

Formal total syntheses of classic natural product target molecules via palladium-catalyzed enantioselective alkylation

Beilstein Journal of Organic Chemistry, 2014
Pd-catalyzed enantioselective alkylation in conjunction with further synthetic elaboration enables the formal total syntheses of a number of “classic” natural product target molecules. This publication highlights recent methods for setting quaternary and
Yiyang Liu, Marc Liniger, Ryan M. McFadden, Jenny L. Roizen, Jacquie Malette, Corey M. Reeves, Douglas C. Behenna, Masaki Seto, Jimin Kim, Justin T. Mohr, Scott C. Virgil, Brian M. Stoltz   +11 more
doaj   +1 more source

Chiral separation of substituted phenylalanine analogues using chiral palladium phosphine complexes with enantioselective liquid–liquid extraction [PDF]

, 2010
Chiral palladium phosphine complexes have been employed in the chiral separation of amino acids and phenylalanine analogues in particular. The use of (S)-xylyl-BINAP as a ligand for the palladium complex in enantioselective liquid–liquid extraction ...
Adriaan J. Minnaard, Bastiaan J. V. Verkuijl, Ben L. Feringa, Boelo Schuur, Bohm, Bravo, Breuer, Burrows, Carey, Cataldo, Davankov, Dialer, Fujima, Galan, Gavioli, Hallett, Henderson, Houlton, Johannes G. de Vries, Keszei, King, Kozma, Lingenfelter, Makosza, Maximini, Noorduin, Pamies, Peacock, Perez-Fuertes, Quallich, Quintal, Reeve, Schug, Schuur, Schuur, Schuur, Simandi, Simandi, Snyder, Steensma, Steensma, Steensma, Takeuchi, Tamada, Tan, Tsukube, van der Ent, Verkuijl   +47 more
core   +2 more sources