5-Butanoyl-2-hydroxy

Acetyl-phenyl- 635 4-Amino-3,5-dimethyl-phenyl- 102 2-Amino-4-hydroxy-phenyl- 692 4-Amino-phenyl- 685 4-Benzylamino-phenyl- 102 2,4-Dinitro-phenyl- 692 4-(2-Hydroxy-benzylamino)-phenyl- 102 2-(2-Methyl-butanoyl)-phenyl- 635 4-Methoxy-2,6-dimethyl-phenyl-102 (Nitro-phenyl)- 635 2-Nitro-phenyl- 680, 692 4-Nitro-phenyl- 685... 

N.N-Bis-[2-Huoro-ethyl]-3-melhyl-EiOa. 576 (OTos -> L) N,N-Bis-[2-fluoro-etliyl -3-nitro-ElOa, 576 (OTos F) N,N-Bis-[2-fluoro-ethyl]-4-nitro-ElOa. 576 (OTs F) N.N-Bis-[heptafluoro-butanoyl)-pentafluoro- ElOa. 78 (Educt) N.N-Bis-[2-hydroxy-ethyl]-peniafluo-ro- E10b2, 455 (K - NR,)... 

Hydroxy-2-methyl-4,4,4-trifluoro-3-trifluoromethyl-butanoyl)- -3,.3-dioxide ElOb, 449 (R2CO 1 RH)... 

Hydroxy-l-(2-methyl-butanoyl)-E21a, 839 f. (H5C2-CO-NR2 + H5C2 — I)... 

Pyrazin 3-Hydroxy-5-isopropyl-2-(2-methyl-propyl)- E9b/2, 264 (R -CO-CH2-NH-CHR2-COOR/NH3) Pyrazin-l-oxid 2-Hydroxy-3 (or6)-isopropy l-6(or 3)-(2-methy 1)-propyl)-E9b/2, 312(4-Oxid-Red.) Pyrazol 4-(3-Methyl-butanoyl)-1,3,5-trimethyl- VII/2a, 103 Undecan 2-Diazo-l-oxo-E14b, 1167 (R-CHO + R-S02-N3)... 

Pentendisaure 4-(Amino-morpho-lino-methylen)-2-cyan- -1-ethylester-5-nitril E15/2, 2198 [OR - C(CN) = C(NH2)-NR2] Pteridin 6-Butanoyl-2,4-dioxo-l,3,7-trimethyl-1,2,3,4-tetrahydro-E13/2, 1318 (Acylierung) IH-Tetrazol 5-[(4-Acetyl-3-hydroxy-... 

Hydroxy-3-methyl-4-(3-oxo-butanoyl)- 552 5-Hydroxy-3-mcthyl-4-(3-oxo-3-phenyl-propyl)- 666... 

Acelyl-butanoyl- 1103 Acetyl-(4-ch1or-butanoyl - 1103 Acetyl-(4-clilor-pentanoyl)- 1103 Acetyl-pentanoyl- 1103 (2-Acetyl-phenyl)-acctyl- 1301 (4-Acetyl-phenyl)-acetyl- 993 Acetyl-(4-phenyl-bulanoyl)- 1103 Athoxycarbonyl- 1272, 1280 (2-Athyl-hexanoyl - 1001 Athyl-(4-hydroxy-phcnyl -bcnzoyl- 646 Athyliden-(2.4.6-triathyl-phenyl)- -oxid 1.735 Athyliden-(2.4,6-triisopropyl-phenyl)- -oxid 1335,1336 Athyliden-(2.4.6-trimethyl-phenyl)- -oxid 1335 Athyl-phenyl- 1155... 

Acetylcalanolide A, in C-20006 2 -Deoxy-2 -(2-hydroperoxy-3-methyl-3-butenyl)bruceol, in D-20026 2 -Deoxy-2 -(2-hydroxy-3-methyl-2-butanoyl) bruceol, in D-20026... 

The role of D-w o-inositol 3,4,5,6-tetrakisphosphate [Ins(3,4,5,6)P4] in the uncoupling of chloride anion secretion from intracellular calcium levels was confirmed with experiments using a membrane-permeable analogue. After cell penetration, derivative (54) with the four phosphate groups masked as acyloxymethyl esters and the two hydroxy groups as butanoyl esters, was cleaved by intracellular esterases to give Ins(3,4,5,6)P4 which caused inhibition of chloride anion secretion [75],... 

STEPS 6-8 OF FIGURE 23.6 REDUCTION AND DEHYDRATION The ketone carbonyl group in acetoacetyl ACP is next reduced to the alcohol j8-hydroxy-butyryl ACP by j8-keto thioester reductase and NADPH. R Stereochemistry results at the newly formed chirality center in the )8-hydroxy thioester product. (Note that the systematic name of a butyryl group is butanoyl.)... 

N-(D-Threo- and racemic erythro-3-amino-2-hydroxy-butanoyl)-2, 3 -dideoxykanamycin A has been prepared using a standard esterification procedure with the corresponding azido-hydroxy-butanoic acid. Glucuronide saponins have been used to furnish paromamine and ribostamycin by means of lead tetraacetate or anodic oxidative decarboxylation procedures. Phase-sensitive 2D COSY spectra... 

Hydrogenation of O-methyIhumulinic acid D yields a very complex reaction mixture. However, when the corresponding salt is reduced with hydrogen and platinum(IV) oxide as catalyst, O-methyIdihydrohumulinic acid D or 2-(3-methyl-butanoyl)-5-(3-methylbutyl)-3-hydroxy-2-cyclopentenone (133, Fig. 65) is isolated as the band with K 1.14 after 150 transfers in the two-phase system aqueous buffer pH 6.62 CCI4 (44,45). The molecular formula is C- 6 2604- If 1 1 spectrum no... 

The corresponding acylated compound, which also occurs in the reaction mixture, may be obtained upon prolonged heating of lupulone (or colupulone) in disodium carbonate (9). The troublesome separation of compound 286 (Fig. 114) does not allow isolation of pure material. Periodate cleavage affords dehydrohumulinic acid (see 8.4.4.2.) and 2,8-dimethylnona-2,7-dien-5-one. Compound 286 is 2-(3-methyl-butanoyl)-5-(3-methyl-2-butenyl)-3,4-dihydroxy-4-[1-(3-methyl-2-butenyl)-1-hydroxy-4-methyl-3-pentenyl]-2-cyclopentenone. Isomerized hop extracts with a high level of beta acids contain compounds 285 and 286 (2-3%). 

---