SU423293A3 - WAY OF OBTAINING 5a, 21-DIBROM-br-Fluorine derivatives of PrРЕgnan series - Google Patents
WAY OF OBTAINING 5a, 21-DIBROM-br-Fluorine derivatives of PrРЕgnan seriesInfo
- Publication number
- SU423293A3 SU423293A3 SU1790165A SU1790165A SU423293A3 SU 423293 A3 SU423293 A3 SU 423293A3 SU 1790165 A SU1790165 A SU 1790165A SU 1790165 A SU1790165 A SU 1790165A SU 423293 A3 SU423293 A3 SU 423293A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- series
- prреgnan
- dibrom
- obtaining
- way
- Prior art date
Links
Landscapes
- Steroid Compounds (AREA)
Description
Изобретение относитс к способу получени новых 5а-, 21-дибром-6р - фторпроизводных р да прегнана, которые могут быть иснользовавы как исходные соединени в синтезе физиологическ1И активных веществ.The invention relates to a process for the preparation of new 5-, 21-dibromo-6p - fluorine derivatives of a series of pregnane, which can be used as starting compounds in the synthesis of physiological active substances.
Предлагаетс основанный на известной реакции 21-Хромировани стероидов р да прегнана способ получени 5а, 21-дибром-6р-фторпроизводных р да прегпана общей формулы IA method based on the known reaction of 21-chroming of steroids in a series of pregnana is proposed for preparing 5a, 21-dibromo-6p-fluorine derivatives of a series of pregpan of general formula I
CHjBlCHjBl
заключающийс в том, что соединение общей формулы Пthe fact that the compound of the general formula P
10ten
2020
где RI - водород или гидроксил, свободный или этерифицированный низшей алифатической карбоновой кислотой, содержащей 1-5 атомов углерода;where RI is hydrogen or hydroxyl, free or esterified with a lower aliphatic carboxylic acid containing 1-5 carbon atoms;
R2 - водород, гидроксил «ли алкил с 1-5 атомами углерода или Ri и R2 вместе образуют изопронилидендиоксигруппу;R2 is hydrogen, hydroxyl "or alkyl with 1-5 carbon atoms or Ri and R2 together form an isopronylidenedioxy group;
Z - водород или ацил низшей алифатической карбоновой кислоты, содержащей 1-5 атомов углерода,Z is hydrogen or acyl lower aliphatic carboxylic acid containing 1-5 carbon atoms,
где RI, R2 и Z имеют выщеуказанные значеБИЯ , подвергают действию брома в присутствии кислого катализатора в среде галогеналкана и/или низшего алифатического спирта с последующим выделением целевого продукта известными приемами.where RI, R2 and Z have the above values, are exposed to bromine in the presence of an acidic catalyst in a halogen-alkane and / or lower aliphatic alcohol, followed by isolation of the target product by known methods.
В качестве галогеналкана используют преимущественно галогенпроизводное низшего алкана , например хлороформ или хлористый метилен, а в качестве низшего спирта - низший алифатический спирт с 1-3 атомами углерода , предпочтительно метанол.As the halogenated alkane, a halogeno-derivative of a lower alkane is preferably used, for example chloroform or methylene chloride, and as a lower alcohol, a lower aliphatic alcohol with 1 to 3 carbon atoms, preferably methanol.
Дл инициировани реакции бромировани примен ют сухой хлористый водород ИЛИ его раствор в уксусной кислоте, возможно в приDry hydrogen chloride OR its solution in acetic acid may be used to initiate the bromination reaction;
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL14844071A PL76715B1 (en) | 1971-05-28 | 1971-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
SU423293A3 true SU423293A3 (en) | 1974-04-05 |
Family
ID=19954504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1790165A SU423293A3 (en) | 1971-05-28 | 1972-05-26 | WAY OF OBTAINING 5a, 21-DIBROM-br-Fluorine derivatives of PrРЕgnan series |
Country Status (4)
Country | Link |
---|---|
DD (1) | DD96704A5 (en) |
HU (1) | HU165210B (en) |
PL (1) | PL76715B1 (en) |
SU (1) | SU423293A3 (en) |
-
1971
- 1971-05-28 PL PL14844071A patent/PL76715B1/xx unknown
-
1972
- 1972-05-26 SU SU1790165A patent/SU423293A3/en active
- 1972-05-26 DD DD16322172A patent/DD96704A5/xx unknown
- 1972-05-27 HU HUII000099 patent/HU165210B/hu unknown
Also Published As
Publication number | Publication date |
---|---|
HU165210B (en) | 1974-07-27 |
PL76715B1 (en) | 1975-02-28 |
DD96704A5 (en) | 1973-04-05 |
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