74262-56-9

Upstream product

• 61597-96-4 Isobutyl (R)-lactate 
• 17392-83-5 (R)-Methyl lactate 
• 18162-48-6 tert-butyldimethylsilyl chloride 
• 845641-41-0 (R)-isobutyl 2-(t-butyldimethylsilyloxy)-propanoate 
• 105198-38-7 ethyl (S)-2-(tert-butyldimethylsilyloxy)propanoate 
• 171230-81-2 (R)-2-(tert-butyl-dimethyl-silanyloxy)-propionic acid methyl ester 
• 119619-45-3 (R)-2-<(tert-butyldimethylsilyl)oxy>propanoic acid 

Downstream Products

• 141195-07-5 (Z)-(2R,3R,7S)-7-Benzyloxy-2-(tert-butyl-dimethyl-silanyloxy)-oct-5-en-3-ol 
• 141195-10-0 (Z)-(2R,3S,7S)-7-Benzyloxy-2-(tert-butyl-dimethyl-silanyloxy)-oct-5-en-3-ol 
• 133604-13-4 (2R,3R,4R,5R,6S,7R)-3-O-benzyl-7-O-((tert-butyldimethyl)silyl)-1,2-O-isopropylidene-4-methyl-5-vinyloctane-1,2,3,6,7-pentol 
• 183253-59-0 (R)-4-Benzhydryl-3-{(R)-2-[(1R,2R)-2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-propyl]-hexanoyl}-oxazolidin-2-one 
• 183253-60-3 (R)-4-Benzhydryl-3-{(R)-2-[(1R,2R)-2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-propyl]-octanoyl}-oxazolidin-2-one 
• 183253-61-4 (R)-4-Benzhydryl-3-{(R)-2-[(1R,2R)-2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-propyl]-7-methyl-octanoyl}-oxazolidin-2-one 
• 183253-62-5 (R)-4-Benzhydryl-3-{(R)-2-[(1R,2R)-2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-propyl]-hexadecanoyl}-oxazolidin-2-one 
• 183253-63-6 (R)-4-Benzhydryl-3-{(R)-2-[(1R,2R)-2-(tert-butyl-dimethyl-silanyloxy)-1-hydroxy-propyl]-octadecanoyl}-oxazolidin-2-one 
• 177933-13-0 C₂₇H₅₁NO₄SSi₂ 
• 177933-16-3 (-)-(S_S,1Z,N(1S),3R,4R,5R)-5-(tert-butyldimetylsilyloxy)-3-methyl-1-(p-tolylsulfimidoyl)-N-(1-trimethylsilyloxymethyl-2-methylpropyl)-1-hexen-4-ol 
• 177933-18-5 (R_S,1Z,N(1S),3S,4S,5R)-5-(tert-butyldimetylsilyloxy)-3-methyl-1-(p-tolylsulfimidoyl)-N-(1-trimethylsilyloxymethyl-2-methylpropyl)-1-hexen-4-ol 
• 177933-26-5 (+)-(R_S,N(1R),1S,1'S,2R,2'Z)-1-(2'-{[N-(1-{[(tert-butyldimethylsilyl)oxy]methyl}-2-methylpropyl)-S-4-(methylphenyl)sulfonimidoyl]methylene}cyclopent-1'-yl)-2-[(tert-butyldimethylsilyl)oxy]propan-1-ol 
• 177933-24-3 (-)-(S_S,N(1R),1R,1'R,2R,2'Z)-1-(2'-{[N-(1-{[(tert-butyldimethylsilyl)oxy]methyl}-2-methylpropyl)-S-4-(methylphenyl)sulfonimidoyl]methylene}cyclopent-1'-yl)-2-[(tert-butyldimethylsilyl)oxy]propan-1-ol 
• 177933-28-7 (+)-(R_S,N(1R),1S,1'S,2R,2'Z)-1-(2'-{[N-(1-{[(tert-butyldimethylsilyl)oxy]methyl}-2-methylpropyl)-S-4-(methylphenyl)sulfonimidoyl]methylene}cyclohex-1'-yl)-2-[(tert-butyldimethylsilyl)oxy]propan-1-ol 

Relevant academic research and scientific papers

Structure–activity relationship study of the anti-obesity natural product yoshinone A

Yoshinone A was derived from marine algae and shown to inhibit adipogenic differentiation. The natural compound is composed of a γ-pyrone ring and a side chain and that contains two asymmetric carbons. Although their absolute configuration has been determ

C11-CYCLIC SUBSTITUTED 13-MEMBERED MACROLIDES AND USES THEREOF

Provided are 13-membered macrolides for the treatment of infectious diseases. The 13- membered macrolides described herein are azaketolides. Also provided are methods for preparing the 13-membered macrolides, pharmaceutical compositions comprising the 13-

Stereoselective Total Synthesis of (+)-Aristolactam GI

Aristolactams are an important subgroup of aporphinoids, which all share a common phenanthrene chromophore motif that is thought to be responsible for the range of interesting physicochemical and biological properties exhibited by these compounds. Among all of the aristolactams discovered, (+)-aristolactam GI displays a unique structural feature of having the aristolactam scaffold linked via a benzodioxane ring to a phenyl propanoid unit, resulting in the compound being an aporphinoid-lignan hybrid. The synthesis of (+)-aristolactam GI was achieved first by synthesis of an orthogonally protected aristolactam, which was prepared using a Suzuki/aldol cascade to convert a differentially protected isoindolin-1-one to the required phenanthrene. The required enantiopure phenyl propanoid unit was prepared from readily available (R)-methyl lactate. A selective Mitsunobu reaction was used to combine these two key fragments, prior to the formation of the linking benzodioxane in the final step. The absolute stereochemistry of the natural product was confirmed to be 7′S, 8′S.

Rapid de Novo Preparation of 2,6-Dideoxy Sugar Libraries through Gold-Catalyzed Homopropargyl Orthoester Cyclization

A flexible de novo route capable of producing libraries of 2,6-dideoxy sugars is described. We have found that Au(JackiePhos)SbF6MeCN promotes the conversion of homopropargyl orthoesters into functionalized 2,3-dihydro-4H-pyran-4-ones in good t

Stereoselective Access to (E)-1,3-Enynes through Pd/Cu-Catalyzed Alkyne Hydrocarbation of Allenes

PdII and CuI cooperate in catalyzing the alkynes hydrocarbation of allenes (AHA) giving (E)-1,3-enynes with high yields, atom economy, and high regio-/stereoselectivities. We devised new efficient conditions and expanded the substrat

Total Synthesis and Structure Revision of Diplobifuranylone B

An asymmetric total synthesis of diplobifuranylone B was achieved in 10 steps for the longest linear sequence and in 15.8% overall yield from commercially available methyl (R)-(+)-lactate and l-glutamic acid. This synthesis features a stereoselective construction of the key 2,5-dihydrofuran ring in the natural product via a recently developed asymmetric gold catalysis. The stereochemical flexibility offered by the catalysis enables an expedient revision of the reported structure of diplobifuranylone B, where the relative stereochemistry of the 2,5-dihydrofuran moiety was previously misassigned as cis instead of trans.

Studies towards the synthesis of trocheliophorolides

Total synthesis of trocheliophorolide C epimer is reported. The synthetic strategy involves generation of lactone skeleton and preparation of unsaturated side chain followed by cross-metathesis. The Eglinton oxidative coupling, Cadiot-Chodkiewicz cross-coupling and cross-metathesis are the key reactions used in the synthesis. We also attempted the synthesis of trocheliophorolide D epimer, which includes Cu catalyzed various cross-coupling reactions.

2,5-DISUBSTITUTED 3-METHYL PYRAZINES AND 2,5,6-TRISUBSTITUTED 3-METHYL PYRAZINES AS ALLOSTERIC SHP2 INHIBITORS

The present disclosure is directed to inhibitors of SHP2 and their use in the treatment of disease. Also disclosed are pharmaceutical compositions comprising the same.

Chiron approach towards optically pure γ-valerolactone from alanine

A concise synthesis of both enantiomers of γ-valerolactone has been developed from commercially available Alanine. The key steps in the synthesis of these γ-Lactones are DIBAL-H reduction of ester (9) followed by in situ Wittig reaction with EtO2CCH = PPh3 ylide (13) (Z/E = 1: 3.5) and one pot lactonization triggered by deprotection of O-TBS ether (14).

SYNTHESIS OF DESOSAMINES

The present invention provides desosamine and mycaminose analogs and nitro sugars and methods for their preparation. The invention also provides methods of cyclizing a compound of Formula (Α') with glyoxal to give a nitro sugar of Formula (B). Methods for the preparation of compound of Formula (D') are provided comprising cyclization of a nitro alcohol to give a nitro sugar and reduction and alkylation of the nitro sugar to give a desosamine, mycaminose, or an analog thereof.