Last Updated：2025/12/31
Sentence
Extraction
with
CH
2
Cl
2
(3
×
10
mL),
dryingover
Na
2
SO
4,
and
chromatographic
purification
on
a
silica
gel
column
with
mixtures
of
n
-hexane-EtOAc
yielded,
after
crystallization,
2′-hydroxy-3′,6′-dimethoxy-4′-
O
-(3″-methylbut-2″-enyl)chalcone
(
3
)
(8.4
mg,
84
%),
trivially
named
limbachalcone
A.
Quizzes for review
Extraction with CH 2 Cl 2 (3 × 10 mL), dryingover Na 2 SO 4, and chromatographic purification on a silica gel column with mixtures of n -hexane-EtOAc yielded, after crystallization, 2′-hydroxy-3′,6′-dimethoxy-4′- O -(3″-methylbut-2″-enyl)chalcone ( 3 ) (8.4 mg, 84 %), trivially named limbachalcone A.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
