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Two new pregnane-type steroidal alkaloids from Sarcococca saligna

Atta-ur-Rahman¹, S Anjum, A Farooq

¹H. E. J. Research Institute of Chemistry, University of Karachi, Pakistan.

|November 20, 1997

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Two novel pregnane-type steroidal alkaloids were identified in Sarcococca saligna roots and stems. This study also reports N-formylchonemorphine and vaganine-A from this plant for the first time.

Area of Science:

Natural Product Chemistry
Phytochemistry
Medicinal Chemistry

Background:

Sarcococca saligna is a plant species known for its rich phytochemical profile.
Steroidal alkaloids represent a class of natural products with diverse biological activities.
Previous research has indicated the presence of various bioactive compounds in Sarcococca species.

Purpose of the Study:

To isolate and characterize new steroidal alkaloids from Sarcococca saligna.
To identify known alkaloids not previously reported in this species.
To contribute to the understanding of the chemical diversity of Sarcococca saligna.

Main Methods:

Extraction of Sarcococca saligna roots and stems using ethanol.
Chromatographic techniques for isolation of compounds.

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Spectroscopic methods (e.g., NMR, MS) for structural elucidation.

Main Results:

Isolation of two new pregnane-type steroidal alkaloids: (20S, 2'Z)-20-(N,N-dimethylamino)-3 beta-(2-methyl-2Z-butenamido)-pregn-5-en-4-one and (20S, 2'Z)-20-(N,N-dimethylamino)-3 beta-(2-methyl-2Z-butenamido)-pregna-5,14-dien-4-one.
Identification of two known alkaloids, N-formylchonemorphine and vaganine-A.
This marks the first isolation of N-formylchonemorphine and vaganine-A from Sarcococca saligna.

Conclusions:

The phytochemical investigation of Sarcococca saligna yielded novel steroidal alkaloids.
The study expands the known chemical constituents of Sarcococca saligna.
Further research may explore the biological activities of these isolated compounds.