3-Acetoxy-8-methyl

Other reactions with their counterparts in the pyridine series are also well known. Thus, 2,3-dimethylpyrazine 1,4-dioxide reacts with acetic anhydride to yield 2,3-bis(acetoxy-methyl)pyrazine (S3) in good yield (72KGS1275). Pyrazine 1-oxide also reacts directly with acetic anhydride to yield 2(ljH)-pyrazinone by way of the intermediate acetate (Scheme 22). The corresponding reaction in the quinoxaline series is not so well defined and at least three products result (Scheme 23) (67YZ942). [Pg.171]

Common Name Bis[Acetoxy-methyl acetic acid trimethylammoniumethyl ester] -naphtha-lene-1,5-dlsulfonate... [Pg.26]

N-Phenyl-phthalimid — in Gegenwart von Acetanhydrid elektrolysiert — liefert unter Ringoffnung 2-(Acetoxy-methyl)-benzanilidl (67% d.Th.) ... [Pg.662]

Bis(acetoxymethyl)-6-methoxy-5-quinoxalmamme (121) gave 2,3-bis(acetoxy-methyl)-6-methoxy-5,8-quinoxalinequinone (122) [0N(S03K)2, Me2NCHO, AcOH, H2O, 20°C, 2 h 42%]. ... [Pg.207]

Acetoxymethylquinazoline 1,4-dioxide 2-Acetoxymethylquinazoline 4-oxide 1 -Acetoxy-6-methyl-2( l//)-quinoxalinone 3 - Acetoxy methyl-2( 1H)-quinoxalinone 1 -Acetoxy-3-methyl-2( l//)-quinoxalinone... [Pg.363]

C17H24012 ( )-2-(Acetoxy methyl)-1,3,4,6-tetra-O-acetyl-epi-inositol AXMAIN 31 354... [Pg.398]

Additional hypotheses concerning prostaglandin biosynthesis in P. homomalla resulted from isolation of 11R-HETE (76) from the polar lipid fraction [95]. Apparently, 11R-HETE (76) is also a minor product of incubations of arachidonic acid with acetone powder preparations of P. homomalla [95], In this alternate hypothesis (Scheme 8), an 11-hydroxy or 11-hydroperoxy-8,9-allene oxide intermediate is formed from a sequence of oxidations at C8 and Cll. Opening of the allene oxide to a transient C8 earboeation induces eycli-zation with a consequent addition of water to C15. This proposed pathway leads initially to formation of PGE2 (16 or 38), which following acetylation, elimination of acetic acid from Cl 1-12, and esterification, forms the observed major natural product in the coral, 15-acetoxy methyl PGA2 (36 or 54). Notably, if... [Pg.146]

Reaction of the silyl derivative of quinoline with 2-acetoxyethyl acetoxy-methyl ether in dichloroethane with stannic chloride gave a cyclonucleoside. Removal of both the acetyl and ethyl ester groups in NaOH afforded the fully deprotected nucleoside 788. Acylation of 788 could be carried out with different esters in the presence of amino Ps lipase [91SC1477 92JCR(S)216]. The 4-quinolones showed no significant antiviral activity (91SC1477). [Pg.133]

The thieno[3,2-d]pyrimidine-2,4-diones were prepared as shown in Scheme 237, and their silyl derivatives were coupled with various acetoxy-methyl ethers in the presence of stannic chloride to give diseco (type 2.1), triseco (type 3.1), and pentaseco benzyl derivatives of type 5.1 nucleosides (94JHC305). [Pg.198]

Mit Essigsaureanhydrid wird die Chlor-methyl-Funktion in eine Acetoxy-methyl-Gruppe iiber-gefuhrt273 z. B. ... [Pg.678]

Acetoxy-methyl)-furazan laBt sich mit Sauren zu 90% zu 3-(Hydroxy-methyl)-furazan ver-seifen275,276 ... [Pg.679]

C3H, C2Hs 3- Acetoxy-methyl )-3-nitro-4-oxo-heptan 76 3-M ethylen-3-oxo-heptan 90... [Pg.219]

CH(CH,)2 c2h, 4-( Acetoxy-methyl)-2-methyI-4-nitro-3-oxo-hexan 75 2-Methyl-4-methyIen-3-oxo-hexan 82... [Pg.219]

CjHji ch3 2- ( Acetoxy-methyl)-2-nitro-3-oxo-octan 73 2-M ethylen-3-oxo-oetan 85... [Pg.219]

C4H,3 ch3 2-(Acetoxy-methyl)-2-nitro- 3-oxo-nonan 80 2-Methylen-3-oxo-nonan 85... [Pg.219]

Acetoxy-methyl) -2-nitro-1-oxo-cycloheptan 90 2-Methylen- I-oxo-cyclohexan 85... [Pg.219]

An aromatization has been observed211 with 1,3,5-tri-O-acetyl-2-chloro-2-deoxy-D-arabinose when this compound was distilled at 15070.5 torr, some decomposition occurred to give 2-(acetoxy-methyl)-4-chIorofuran. [Pg.305]

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