FIELD: organic chemistry. SUBSTANCE: product: (22x)-6b-methoxy-3a,5-cyclo-5a-cholestane-24-one-22-ol, yield is 90% , empirical formula is C28H47O3. Reagent 1: (22ζ)-6b- methoxy -3a,5- cyclo-5a- pregnane-20-formyl. Reagent 2: methyltriphenylphosphonium bromide in the presence of butyllithium and isobutyronitrile oxide. Reagent 3: hydrogen - gas on the Raney nickel in the presence of boric acid. Synthesized compounds is used as a plant growth stimulating agent. EFFECT: yield is increased by 2.5 times, simplified method of synthesis.
| Title | Year | Author | Number |
|---|---|---|---|
| (22R,23R,24S)-22,23-EPOXY-24-ETHYL-5ALPHA-CHOLEST-2-EN-6-ON AS SEMIPRODUCT IN SYNTHESIS OF (24S)-24-ETHYLBRASSINON | 0 |
|
SU1270155A1 |
| (22R,23R,24S)-3BETA-BROM-22,23-EPOXY-24-ETHYL-5ALPHA-CHOLESTAN-6-ON AS SEMIPRODUCT IN SYNTHESIS OF (24S)-24-ETHYLBRASSINON | 0 |
|
SU1270154A1 |
| (22R, 23R, 24S) -22,23- DIOXY -24- ETHYL -5ALFA- CHOLEST-2 - ELECTRONIC -6- ONE AS INTERMEDIATE IN SYNTHESIS OF (24S) -24- ETHYL BRASSINONE AND PROCESS FOR PREPARING SAME | 0 |
|
SU1363830A1 |
| (22R)-20-3′-ISOPROPYLISOXAZOLINE-5-YL)-3α,5- CYCLO-5-a-PREGNANE-6-ON POSSESSING PHYTO- AND GROWTH STIMULATING ACTIVITY AND METHOD FOR ITS PRODUCTION | 1990 |
|
SU1786807A1 |
| METHOD OF SYNTHESIS OF α,5- CYCLO -24R- METHYL -a- CHOLEST -7,22- DIENE-6b-OL | 1991 |
|
RU2024541C1 |
| METHOD OF OBTAINING 3ALPHA,5-CYCLO-24S-ETHYL-5ALPHA-CHOLEST-22-EN-6-ON | 0 |
|
SU1162816A1 |
| 33β-CHLORO-4β-HYDROXY-24S-ETHYL-55β-CHOLESTANE-6-ONE SHOWING PHYTOGROWTH-STIMULATING ACTIVITY, AND A METHOD OF ITS SYNTHESIS | 1986 |
|
SU1371003A1 |
| 3BETA- CHLORO-24S- ETHYLOHOLEST -5BETA-EN -4BETA -OL AS A SEMI-PRODUCT FOR SYNTHESIS OF 3BETA- CHLORO- 4BETA- HYDROXY- 24S- ETHYLE- 5BETA- CHOLESTANE -6- ONE | 0 |
|
SU1356428A1 |
| METHOD FOR PREPARING 24-EPIBRASSINOLIDE | 2004 |
|
RU2272044C1 |
| METHOD OF PRODUCING 3B-OXY-24R-METHYCHOLESTENE | 0 |
|
SU1594181A1 |
